From d1097ccb599c4343e3f80ca9bd793bbfce424e8b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Donny/=EA=B0=95=EB=8F=99=EC=9C=A4?= <kdy1997.dev@gmail.com>
Date: Tue, 10 Oct 2023 20:42:20 +0900
Subject: [PATCH] feat(css/parser): Store lexed comments (#8091)

**Description:**

For now, we leave every comment as a leading comment. As logic for determining leading vs trailing is quite complex, I'll do it with another PR.
---
 crates/swc_common/src/comments.rs             |   8 +-
 crates/swc_css_codegen/tests/fixture.rs       |  78 ++--
 crates/swc_css_compat/tests/fixture.rs        |   1 +
 crates/swc_css_lints/tests/lints.rs           |   4 +-
 crates/swc_css_minifier/benches/full.rs       |   3 +-
 crates/swc_css_minifier/tests/fixture.rs      |   2 +-
 crates/swc_css_modules/tests/fixture.rs       |   2 +
 crates/swc_css_modules/tests/with_compat.rs   |   1 +
 crates/swc_css_parser/benches/compare.rs      |   8 +-
 crates/swc_css_parser/benches/lexer.rs        |   2 +-
 crates/swc_css_parser/benches/parser.rs       |   2 +-
 crates/swc_css_parser/src/lexer/mod.rs        |  62 ++-
 crates/swc_css_parser/src/lib.rs              |  16 +-
 crates/swc_css_parser/src/parser/input.rs     |   2 +-
 crates/swc_css_parser/tests/fixture.rs        |  36 +-
 .../charset/invalid/leading-comments.json     |  35 ++
 .../charset/invalid/trailing-comments.json    |   1 +
 .../charset/valid/leading-comments.json       |   1 +
 .../charset/valid/trailing-comments.json      |   1 +
 .../color-profile/leading-comments.json       |   1 +
 .../color-profile/trailing-comments.json      |   1 +
 .../at-rule/container/leading-comments.json   |   1 +
 .../at-rule/container/trailing-comments.json  |   1 +
 .../counter-style/leading-comments.json       |   1 +
 .../counter-style/trailing-comments.json      |   1 +
 .../custom-media/leading-comments.json        |   1 +
 .../custom-media/trailing-comments.json       |   1 +
 .../at-rule/document/leading-comments.json    |  35 ++
 .../at-rule/document/trailing-comments.json   |   1 +
 .../at-rule/font-face/leading-comments.json   |   1 +
 .../at-rule/font-face/trailing-comments.json  |   1 +
 .../font-feature-values/leading-comments.json |  13 +
 .../trailing-comments.json                    |   1 +
 .../font-palette-values/leading-comments.json |   1 +
 .../trailing-comments.json                    |   1 +
 .../at-rule/import/leading-comments.json      | 262 ++++++++++++
 .../at-rule/import/trailing-comments.json     |   1 +
 .../at-rule/keyframe/leading-comments.json    |  35 ++
 .../at-rule/keyframe/trailing-comments.json   |   1 +
 .../at-rule/layer/leading-comments.json       |  35 ++
 .../at-rule/layer/trailing-comments.json      |   1 +
 .../at-rule/media/leading-comments.json       |  13 +
 .../at-rule/media/trailing-comments.json      |   1 +
 .../at-rule/namespace/leading-comments.json   |   1 +
 .../at-rule/namespace/trailing-comments.json  |   1 +
 .../at-rule/nest/leading-comments.json        |   1 +
 .../at-rule/nest/trailing-comments.json       |   1 +
 .../at-rule/page/leading-comments.json        |  13 +
 .../at-rule/page/trailing-comments.json       |   1 +
 .../at-rule/property/leading-comments.json    |   1 +
 .../at-rule/property/trailing-comments.json   |   1 +
 .../at-rule/scope/basic/leading-comments.json |  24 ++
 .../scope/basic/trailing-comments.json        |   1 +
 .../scope/chromium/leading-comments.json      |  24 ++
 .../scope/chromium/trailing-comments.json     |   1 +
 .../at-rule/scope/wpt/leading-comments.json   |   1 +
 .../at-rule/scope/wpt/trailing-comments.json  |   1 +
 .../starting-style/leading-comments.json      |   1 +
 .../starting-style/trailing-comments.json     |   1 +
 .../at-rule/supports/leading-comments.json    |   1 +
 .../at-rule/supports/trailing-comments.json   |   1 +
 .../at-rule/unknown/leading-comments.json     | 387 ++++++++++++++++++
 .../at-rule/unknown/trailing-comments.json    |   1 +
 .../tests/fixture/bom/leading-comments.json   |   1 +
 .../tests/fixture/bom/trailing-comments.json  |   1 +
 .../fixture/cdo-and-cdc/leading-comments.json |   1 +
 .../cdo-and-cdc/trailing-comments.json        |   1 +
 .../fixture/comment/leading-comments.json     | 270 ++++++++++++
 .../fixture/comment/trailing-comments.json    |   1 +
 .../dashed-ident/leading-comments.json        |   1 +
 .../dashed-ident/trailing-comments.json       |   1 +
 .../declaration-list/leading-comments.json    |   1 +
 .../declaration-list/trailing-comments.json   |   1 +
 .../fixture/declaration/leading-comments.json |  24 ++
 .../declaration/trailing-comments.json        |   1 +
 .../delim/backslash/leading-comments.json     |   1 +
 .../delim/backslash/trailing-comments.json    |   1 +
 .../dimension/basic/leading-comments.json     |   1 +
 .../dimension/basic/trailing-comments.json    |   1 +
 .../tests/fixture/empty/leading-comments.json |   1 +
 .../fixture/empty/trailing-comments.json      |   1 +
 .../function/calc/leading-comments.json       |  46 +++
 .../function/calc/trailing-comments.json      |   1 +
 .../function/element/leading-comments.json    |   1 +
 .../function/element/trailing-comments.json   |   1 +
 .../linear-gradient/leading-comments.json     |   1 +
 .../linear-gradient/trailing-comments.json    |   1 +
 .../function/mix/leading-comments.json        |  13 +
 .../function/mix/trailing-comments.json       |   1 +
 .../function/unknown/leading-comments.json    |   1 +
 .../function/unknown/trailing-comments.json   |   1 +
 .../function/url/leading-comments.json        |   1 +
 .../function/url/trailing-comments.json       |   1 +
 .../function/var/leading-comments.json        |   1 +
 .../function/var/trailing-comments.json       |   1 +
 .../tests/fixture/hacks/leading-comments.json |  35 ++
 .../fixture/hacks/trailing-comments.json      |   1 +
 .../fixture/hex-colors/leading-comments.json  |   1 +
 .../fixture/hex-colors/trailing-comments.json |   1 +
 .../important/basic/leading-comments.json     |  46 +++
 .../important/basic/trailing-comments.json    |   1 +
 .../fixture/number/leading-comments.json      |   1 +
 .../fixture/number/trailing-comments.json     |   1 +
 .../fixture/only/1/leading-comments.json      |   1 +
 .../fixture/only/1/trailing-comments.json     |   1 +
 .../property/escaped/leading-comments.json    |   1 +
 .../property/escaped/trailing-comments.json   |   1 +
 .../selector/attribute/leading-comments.json  |  13 +
 .../selector/attribute/trailing-comments.json |   1 +
 .../selector/class/leading-comments.json      |   1 +
 .../selector/class/trailing-comments.json     |   1 +
 .../selector/comments/leading-comments.json   | 200 +++++++++
 .../selector/comments/trailing-comments.json  |   1 +
 .../selector/complex/leading-comments.json    |   1 +
 .../selector/complex/trailing-comments.json   |   1 +
 .../selector/compound/leading-comments.json   |   1 +
 .../selector/compound/trailing-comments.json  |   1 +
 .../fixture/selector/id/leading-comments.json |   1 +
 .../selector/id/trailing-comments.json        |   1 +
 .../selector/list/leading-comments.json       |  13 +
 .../selector/list/trailing-comments.json      |   1 +
 .../selector/nesting/leading-comments.json    |  71 ++++
 .../selector/nesting/trailing-comments.json   |   1 +
 .../an-plus-b/leading-comments.json           |  90 ++++
 .../an-plus-b/trailing-comments.json          |   1 +
 .../pseudo-class/any/leading-comments.json    |   1 +
 .../pseudo-class/any/trailing-comments.json   |   1 +
 .../pseudo-class/basic/leading-comments.json  |   1 +
 .../pseudo-class/basic/trailing-comments.json |   1 +
 .../current/leading-comments.json             |   1 +
 .../current/trailing-comments.json            |   1 +
 .../pseudo-class/dir/leading-comments.json    |   1 +
 .../pseudo-class/dir/trailing-comments.json   |   1 +
 .../pseudo-class/future/leading-comments.json |   1 +
 .../future/trailing-comments.json             |   1 +
 .../pseudo-class/has/leading-comments.json    |  13 +
 .../pseudo-class/has/trailing-comments.json   |   1 +
 .../host-context/leading-comments.json        |   1 +
 .../host-context/trailing-comments.json       |   1 +
 .../pseudo-class/host/leading-comments.json   |   1 +
 .../pseudo-class/host/trailing-comments.json  |   1 +
 .../pseudo-class/is/leading-comments.json     |  33 ++
 .../pseudo-class/is/trailing-comments.json    |   1 +
 .../pseudo-class/lang/leading-comments.json   |   1 +
 .../pseudo-class/lang/trailing-comments.json  |   1 +
 .../matches/leading-comments.json             |   1 +
 .../matches/trailing-comments.json            |   1 +
 .../pseudo-class/not/leading-comments.json    |   1 +
 .../pseudo-class/not/trailing-comments.json   |   1 +
 .../pseudo-class/past/leading-comments.json   |   1 +
 .../pseudo-class/past/trailing-comments.json  |   1 +
 .../unknown/leading-comments.json             |   1 +
 .../unknown/trailing-comments.json            |   1 +
 .../pseudo-class/where/leading-comments.json  |  13 +
 .../pseudo-class/where/trailing-comments.json |   1 +
 .../basic/leading-comments.json               |   1 +
 .../basic/trailing-comments.json              |   1 +
 .../cue-region/leading-comments.json          |   1 +
 .../cue-region/trailing-comments.json         |   1 +
 .../pseudo-element/cue/leading-comments.json  |   1 +
 .../pseudo-element/cue/trailing-comments.json |   1 +
 .../escaped/leading-comments.json             |   1 +
 .../escaped/trailing-comments.json            |   1 +
 .../highlight/leading-comments.json           |   1 +
 .../highlight/trailing-comments.json          |   1 +
 .../pseudo-element/part/leading-comments.json |   1 +
 .../part/trailing-comments.json               |   1 +
 .../slotted/leading-comments.json             |   1 +
 .../slotted/trailing-comments.json            |   1 +
 .../unknown/leading-comments.json             |   1 +
 .../unknown/trailing-comments.json            |   1 +
 .../selector/type/leading-comments.json       |  24 ++
 .../selector/type/trailing-comments.json      |   1 +
 .../fixture/style-block/leading-comments.json |  35 ++
 .../style-block/trailing-comments.json        |   1 +
 .../selector/1/leading-comments.json          |   1 +
 .../selector/1/trailing-comments.json         |   1 +
 .../selector/2/leading-comments.json          |   1 +
 .../selector/2/trailing-comments.json         |   1 +
 .../cdo-and-cdc/leading-comments.json         |   1 +
 .../cdo-and-cdc/trailing-comments.json        |   1 +
 .../stylesheet/empty/leading-comments.json    |   1 +
 .../stylesheet/empty/trailing-comments.json   |   1 +
 .../stylis/comma/01/leading-comments.json     |   1 +
 .../stylis/comma/01/trailing-comments.json    |   1 +
 .../fixture/turbo/4092/leading-comments.json  |   1 +
 .../fixture/turbo/4092/trailing-comments.json |   1 +
 .../fixture/value/angle/leading-comments.json |   1 +
 .../value/angle/trailing-comments.json        |   1 +
 .../fixture/value/color/leading-comments.json |   1 +
 .../value/color/trailing-comments.json        |   1 +
 .../custom-property/leading-comments.json     |  46 +++
 .../custom-property/trailing-comments.json    |   1 +
 .../value/dimension/leading-comments.json     |   1 +
 .../value/dimension/trailing-comments.json    |   1 +
 .../value/escaped/leading-comments.json       |  13 +
 .../value/escaped/trailing-comments.json      |   1 +
 .../value/frequency/leading-comments.json     |   1 +
 .../value/frequency/trailing-comments.json    |   1 +
 .../fixture/value/ident/leading-comments.json |   1 +
 .../value/ident/trailing-comments.json        |   1 +
 .../value/integer/leading-comments.json       |   1 +
 .../value/integer/trailing-comments.json      |   1 +
 .../value/length/leading-comments.json        |   1 +
 .../value/length/trailing-comments.json       |   1 +
 .../value/percentage/leading-comments.json    |   1 +
 .../value/percentage/trailing-comments.json   |   1 +
 .../value/quotes/leading-comments.json        |   1 +
 .../value/quotes/trailing-comments.json       |   1 +
 .../value/resolution/leading-comments.json    |   1 +
 .../value/resolution/trailing-comments.json   |   1 +
 .../square-brackets/leading-comments.json     |   1 +
 .../square-brackets/trailing-comments.json    |   1 +
 .../fixture/value/time/leading-comments.json  |   1 +
 .../fixture/value/time/trailing-comments.json |   1 +
 .../value/urange/leading-comments.json        |  57 +++
 .../value/urange/trailing-comments.json       |   1 +
 .../fixture/value/url/leading-comments.json   |  13 +
 .../fixture/value/url/trailing-comments.json  |   1 +
 .../csstree/basic/leading-comments.json       |  46 +++
 .../csstree/basic/trailing-comments.json      |   1 +
 .../leading-comments.json                     |   1 +
 .../trailing-comments.json                    |   1 +
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 crates/swc_css_prefixer/tests/prefixer.rs     |   1 +
 crates/swc_html_minifier/src/lib.rs           |   4 +-
 crates/swc_plugin_runner/tests/css_rkyv.rs    |   4 +-
 946 files changed, 3361 insertions(+), 62 deletions(-)
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/charset/invalid/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/charset/invalid/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/charset/valid/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/charset/valid/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/color-profile/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/color-profile/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/container/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/container/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/counter-style/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/counter-style/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/custom-media/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/custom-media/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/document/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/document/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/font-face/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/font-face/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/font-feature-values/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/at-rule/font-feature-values/trailing-comments.json
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 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/rome/selectors/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/rome/selectors/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/rome/smoke/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/rome/smoke/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/rome/supports/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/rome/supports/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/rome/values/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/rome/values/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/vercel/001/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/vercel/001/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/vercel/002/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/fixture/vendor/vercel/002/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/1/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/1/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/10/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/10/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/11/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/11/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/2/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/2/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/3/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/3/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/4/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/4/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/5/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/5/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/6/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/6/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/7/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/7/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/8/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/8/trailing-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/9/leading-comments.json
 create mode 100644 crates/swc_css_parser/tests/line-comment/css-in-js/9/trailing-comments.json

diff --git a/crates/swc_common/src/comments.rs b/crates/swc_common/src/comments.rs
index b95b263e8b8f..38671f57b07a 100644
--- a/crates/swc_common/src/comments.rs
+++ b/crates/swc_common/src/comments.rs
@@ -541,7 +541,7 @@ impl SingleThreadedComments {
     }
 }
 
-#[derive(Debug, Clone, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 #[cfg_attr(
     any(feature = "rkyv-impl"),
     derive(rkyv::Archive, rkyv::Serialize, rkyv::Deserialize)
@@ -561,15 +561,15 @@ impl Spanned for Comment {
     }
 }
 
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
 #[cfg_attr(
     any(feature = "rkyv-impl"),
     derive(rkyv::Archive, rkyv::Serialize, rkyv::Deserialize)
 )]
 #[cfg_attr(feature = "rkyv-impl", archive(check_bytes))]
 pub enum CommentKind {
-    Line,
-    Block,
+    Line = 0,
+    Block = 1,
 }
 
 #[deprecated(
diff --git a/crates/swc_css_codegen/tests/fixture.rs b/crates/swc_css_codegen/tests/fixture.rs
index ab5cc25e241a..80b621cf3b0d 100644
--- a/crates/swc_css_codegen/tests/fixture.rs
+++ b/crates/swc_css_codegen/tests/fixture.rs
@@ -3,7 +3,7 @@ use std::{
     path::{Path, PathBuf},
 };
 
-use swc_common::{FileName, Span};
+use swc_common::{comments::SingleThreadedComments, FileName, Span};
 use swc_css_ast::*;
 use swc_css_codegen::{
     writer::basic::{BasicCssWriter, BasicCssWriterConfig, IndentType, LineFeed},
@@ -41,10 +41,13 @@ fn run(input: &Path, minify: bool) {
     run_test2(false, |cm, handler| {
         let fm = cm.load_file(input).unwrap();
 
+        let comments = SingleThreadedComments::default();
+
         eprintln!("==== ==== Input ==== ====\n{}\n", fm.src);
 
         let mut errors = vec![];
-        let mut stylesheet: Stylesheet = parse_file(&fm, Default::default(), &mut errors).unwrap();
+        let mut stylesheet: Stylesheet =
+            parse_file(&fm, Some(&comments), Default::default(), &mut errors).unwrap();
 
         for err in take(&mut errors) {
             err.to_diagnostics(&handler).emit();
@@ -79,7 +82,7 @@ fn run(input: &Path, minify: bool) {
 
         let mut errors = vec![];
         let mut stylesheet_output: Stylesheet =
-            parse_file(&fm_output, Default::default(), &mut errors).map_err(|err| {
+            parse_file(&fm_output, None, Default::default(), &mut errors).map_err(|err| {
                 err.to_diagnostics(&handler).emit();
             })?;
 
@@ -342,8 +345,11 @@ fn indent_type(input: PathBuf) {
 
         eprintln!("==== ==== Input ==== ====\n{}\n", fm.src);
 
+        let comments = SingleThreadedComments::default();
+
         let mut errors = vec![];
-        let mut stylesheet: Stylesheet = parse_file(&fm, Default::default(), &mut errors).unwrap();
+        let mut stylesheet: Stylesheet =
+            parse_file(&fm, Some(&comments), Default::default(), &mut errors).unwrap();
 
         for err in take(&mut errors) {
             err.to_diagnostics(&handler).emit();
@@ -375,9 +381,11 @@ fn indent_type(input: PathBuf) {
 
         let mut errors = vec![];
         let mut stylesheet_output: Stylesheet =
-            parse_file(&fm_output, Default::default(), &mut errors).map_err(|err| {
-                err.to_diagnostics(&handler).emit();
-            })?;
+            parse_file(&fm_output, Some(&comments), Default::default(), &mut errors).map_err(
+                |err| {
+                    err.to_diagnostics(&handler).emit();
+                },
+            )?;
 
         for err in take(&mut errors) {
             err.to_diagnostics(&handler).emit();
@@ -404,10 +412,13 @@ fn indent_width(input: PathBuf) {
     run_test2(false, |cm, handler| {
         let fm = cm.load_file(&input).unwrap();
 
+        let comments = SingleThreadedComments::default();
+
         eprintln!("==== ==== Input ==== ====\n{}\n", fm.src);
 
         let mut errors = vec![];
-        let mut stylesheet: Stylesheet = parse_file(&fm, Default::default(), &mut errors).unwrap();
+        let mut stylesheet: Stylesheet =
+            parse_file(&fm, Some(&comments), Default::default(), &mut errors).unwrap();
 
         for err in take(&mut errors) {
             err.to_diagnostics(&handler).emit();
@@ -439,9 +450,11 @@ fn indent_width(input: PathBuf) {
 
         let mut errors = vec![];
         let mut stylesheet_output: Stylesheet =
-            parse_file(&fm_output, Default::default(), &mut errors).map_err(|err| {
-                err.to_diagnostics(&handler).emit();
-            })?;
+            parse_file(&fm_output, Some(&comments), Default::default(), &mut errors).map_err(
+                |err| {
+                    err.to_diagnostics(&handler).emit();
+                },
+            )?;
 
         for err in take(&mut errors) {
             err.to_diagnostics(&handler).emit();
@@ -465,13 +478,16 @@ fn linefeed_lf(input: PathBuf) {
         input.extension().unwrap().to_string_lossy()
     ));
 
+    let comments = SingleThreadedComments::default();
+
     run_test2(false, |cm, handler| {
         let fm = cm.load_file(&input).unwrap();
 
         eprintln!("==== ==== Input ==== ====\n{}\n", fm.src);
 
         let mut errors = vec![];
-        let mut stylesheet: Stylesheet = parse_file(&fm, Default::default(), &mut errors).unwrap();
+        let mut stylesheet: Stylesheet =
+            parse_file(&fm, Some(&comments), Default::default(), &mut errors).unwrap();
 
         for err in take(&mut errors) {
             err.to_diagnostics(&handler).emit();
@@ -505,9 +521,11 @@ fn linefeed_lf(input: PathBuf) {
 
         let mut errors = vec![];
         let mut stylesheet_output: Stylesheet =
-            parse_file(&fm_output, Default::default(), &mut errors).map_err(|err| {
-                err.to_diagnostics(&handler).emit();
-            })?;
+            parse_file(&fm_output, Some(&comments), Default::default(), &mut errors).map_err(
+                |err| {
+                    err.to_diagnostics(&handler).emit();
+                },
+            )?;
 
         for err in take(&mut errors) {
             err.to_diagnostics(&handler).emit();
@@ -534,10 +552,13 @@ fn linefeed_crlf(input: PathBuf) {
     run_test2(false, |cm, handler| {
         let fm = cm.load_file(&input).unwrap();
 
+        let comments = SingleThreadedComments::default();
+
         eprintln!("==== ==== Input ==== ====\n{}\n", fm.src);
 
         let mut errors = vec![];
-        let mut stylesheet: Stylesheet = parse_file(&fm, Default::default(), &mut errors).unwrap();
+        let mut stylesheet: Stylesheet =
+            parse_file(&fm, Some(&comments), Default::default(), &mut errors).unwrap();
 
         for err in take(&mut errors) {
             err.to_diagnostics(&handler).emit();
@@ -571,9 +592,11 @@ fn linefeed_crlf(input: PathBuf) {
 
         let mut errors = vec![];
         let mut stylesheet_output: Stylesheet =
-            parse_file(&fm_output, Default::default(), &mut errors).map_err(|err| {
-                err.to_diagnostics(&handler).emit();
-            })?;
+            parse_file(&fm_output, Some(&comments), Default::default(), &mut errors).map_err(
+                |err| {
+                    err.to_diagnostics(&handler).emit();
+                },
+            )?;
 
         for err in take(&mut errors) {
             err.to_diagnostics(&handler).emit();
@@ -596,11 +619,13 @@ fn parse_again(input: PathBuf) {
     testing::run_test2(false, |cm, handler| {
         let fm = cm.load_file(&input).unwrap();
 
+        let comments = SingleThreadedComments::default();
+
         eprintln!("==== ==== Input ==== ====\n{}\n", fm.src);
 
         let mut errors = vec![];
         let mut stylesheet: Stylesheet =
-            parse_file(&fm, Default::default(), &mut errors).map_err(|err| {
+            parse_file(&fm, Some(&comments), Default::default(), &mut errors).map_err(|err| {
                 err.to_diagnostics(&handler).emit();
             })?;
 
@@ -620,10 +645,15 @@ fn parse_again(input: PathBuf) {
 
         let new_fm = cm.new_source_file(FileName::Anon, css_str);
         let mut parsed_errors = vec![];
-        let mut parsed: Stylesheet = parse_file(&new_fm, Default::default(), &mut parsed_errors)
-            .map_err(|err| {
-                err.to_diagnostics(&handler).emit();
-            })?;
+        let mut parsed: Stylesheet = parse_file(
+            &new_fm,
+            Some(&comments),
+            Default::default(),
+            &mut parsed_errors,
+        )
+        .map_err(|err| {
+            err.to_diagnostics(&handler).emit();
+        })?;
 
         for err in parsed_errors {
             err.to_diagnostics(&handler).emit();
diff --git a/crates/swc_css_compat/tests/fixture.rs b/crates/swc_css_compat/tests/fixture.rs
index 97ff7c4b2327..87a2264bd69b 100644
--- a/crates/swc_css_compat/tests/fixture.rs
+++ b/crates/swc_css_compat/tests/fixture.rs
@@ -25,6 +25,7 @@ fn parse_stylesheet(fm: &Lrc<SourceFile>) -> Stylesheet {
     let mut errors = vec![];
     let ss: Stylesheet = parse_file(
         fm,
+        None,
         ParserConfig {
             allow_wrong_line_comments: true,
             ..Default::default()
diff --git a/crates/swc_css_lints/tests/lints.rs b/crates/swc_css_lints/tests/lints.rs
index 5bc0fdc011ed..0f4768074ac3 100644
--- a/crates/swc_css_lints/tests/lints.rs
+++ b/crates/swc_css_lints/tests/lints.rs
@@ -16,7 +16,7 @@ fn pass(input: PathBuf) {
         let config = Default::default();
 
         let fm = cm.load_file(&input).unwrap();
-        let lexer = Lexer::new(SourceFileInput::from(&*fm), config);
+        let lexer = Lexer::new(SourceFileInput::from(&*fm), None, config);
         let mut parser = Parser::new(lexer, config);
 
         let stylesheet = match parser.parse_all() {
@@ -56,7 +56,7 @@ fn fail(input: PathBuf) {
         let config = Default::default();
 
         let fm = cm.load_file(&input).unwrap();
-        let lexer = Lexer::new(SourceFileInput::from(&*fm), config);
+        let lexer = Lexer::new(SourceFileInput::from(&*fm), None, config);
         let mut parser = Parser::new(lexer, config);
 
         let stylesheet = match parser.parse_all() {
diff --git a/crates/swc_css_minifier/benches/full.rs b/crates/swc_css_minifier/benches/full.rs
index 4a4980e1b77a..b39ca8d3dd7d 100644
--- a/crates/swc_css_minifier/benches/full.rs
+++ b/crates/swc_css_minifier/benches/full.rs
@@ -39,7 +39,8 @@ fn run(src: &str) {
             let fm = cm.new_source_file(FileName::Anon, src.into());
 
             let mut errors = vec![];
-            let mut ss: Stylesheet = parse_file(&fm, Default::default(), &mut errors).unwrap();
+            let mut ss: Stylesheet =
+                parse_file(&fm, None, Default::default(), &mut errors).unwrap();
 
             minify(&mut ss, Default::default());
 
diff --git a/crates/swc_css_minifier/tests/fixture.rs b/crates/swc_css_minifier/tests/fixture.rs
index a649a7a726a4..af17cafa3eb8 100644
--- a/crates/swc_css_minifier/tests/fixture.rs
+++ b/crates/swc_css_minifier/tests/fixture.rs
@@ -21,7 +21,7 @@ fn minify_fixtures(input: PathBuf) {
         let fm = cm.load_file(&input).unwrap();
 
         let mut errors = vec![];
-        let res: Result<Stylesheet, _> = parse_file(&fm, Default::default(), &mut errors);
+        let res: Result<Stylesheet, _> = parse_file(&fm, None, Default::default(), &mut errors);
 
         for err in errors {
             err.to_diagnostics(handler).emit();
diff --git a/crates/swc_css_modules/tests/fixture.rs b/crates/swc_css_modules/tests/fixture.rs
index 4fd20a36d33e..2c52e4870f9f 100644
--- a/crates/swc_css_modules/tests/fixture.rs
+++ b/crates/swc_css_modules/tests/fixture.rs
@@ -18,6 +18,7 @@ fn imports(input: PathBuf) {
         let mut errors = vec![];
         let ss = swc_css_parser::parse_file(
             &fm,
+            None,
             ParserConfig {
                 css_modules: true,
                 ..Default::default()
@@ -51,6 +52,7 @@ fn compile(input: PathBuf) {
         let mut errors = vec![];
         let mut ss = swc_css_parser::parse_file(
             &fm,
+            None,
             ParserConfig {
                 css_modules: true,
                 ..Default::default()
diff --git a/crates/swc_css_modules/tests/with_compat.rs b/crates/swc_css_modules/tests/with_compat.rs
index f102db29278d..e569c076b8c5 100644
--- a/crates/swc_css_modules/tests/with_compat.rs
+++ b/crates/swc_css_modules/tests/with_compat.rs
@@ -34,6 +34,7 @@ fn test_full(input: PathBuf, suffix: Option<&str>) {
         let mut errors = vec![];
         let mut ss: Stylesheet = parse_file(
             &fm,
+            None,
             ParserConfig {
                 css_modules: true,
                 legacy_nesting: true,
diff --git a/crates/swc_css_parser/benches/compare.rs b/crates/swc_css_parser/benches/compare.rs
index 4cdd5bf0117d..f0db9c0d5ed7 100644
--- a/crates/swc_css_parser/benches/compare.rs
+++ b/crates/swc_css_parser/benches/compare.rs
@@ -1,7 +1,9 @@
 extern crate swc_node_base;
 
 use criterion::{black_box, criterion_group, criterion_main, Bencher, Criterion};
-use swc_common::{input::StringInput, FileName, Span, SyntaxContext, DUMMY_SP};
+use swc_common::{
+    comments::SingleThreadedComments, input::StringInput, FileName, Span, SyntaxContext, DUMMY_SP,
+};
 use swc_css_ast::Stylesheet;
 use swc_css_parser::{lexer::Lexer, parser::Parser};
 use swc_css_visit::{Fold, FoldWith, VisitMut, VisitMutWith};
@@ -13,9 +15,11 @@ where
     F: FnMut(Stylesheet) -> Stylesheet,
 {
     let _ = ::testing::run_test(false, |cm, _| {
+        let comments = SingleThreadedComments::default();
+
         let fm = cm.new_source_file(FileName::Anon, SOURCE.into());
 
-        let lexer = Lexer::new(StringInput::from(&*fm), Default::default());
+        let lexer = Lexer::new(StringInput::from(&*fm), Some(&comments), Default::default());
         let mut parser = Parser::new(lexer, Default::default());
         let stylesheet: Stylesheet = parser.parse_all().unwrap();
 
diff --git a/crates/swc_css_parser/benches/lexer.rs b/crates/swc_css_parser/benches/lexer.rs
index 3062d30609a1..b9f3f2edc1f1 100644
--- a/crates/swc_css_parser/benches/lexer.rs
+++ b/crates/swc_css_parser/benches/lexer.rs
@@ -9,7 +9,7 @@ fn bench_stylesheet(b: &mut Bencher, src: &'static str) {
         let fm = cm.new_source_file(FileName::Anon, src.into());
 
         b.iter(|| {
-            let lexer = Lexer::new(StringInput::from(&*fm), Default::default());
+            let lexer = Lexer::new(StringInput::from(&*fm), None, Default::default());
 
             for t in lexer {
                 black_box(t);
diff --git a/crates/swc_css_parser/benches/parser.rs b/crates/swc_css_parser/benches/parser.rs
index bb3e05570779..6a9e40f547f3 100644
--- a/crates/swc_css_parser/benches/parser.rs
+++ b/crates/swc_css_parser/benches/parser.rs
@@ -10,7 +10,7 @@ fn bench_stylesheet(b: &mut Bencher, src: &'static str) {
 
         b.iter(|| {
             let _ = black_box({
-                let lexer = Lexer::new(StringInput::from(&*fm), Default::default());
+                let lexer = Lexer::new(StringInput::from(&*fm), None, Default::default());
                 let mut parser = Parser::new(lexer, Default::default());
 
                 parser.parse_all()
diff --git a/crates/swc_css_parser/src/lexer/mod.rs b/crates/swc_css_parser/src/lexer/mod.rs
index 391b3c8640b6..42c11b389cdb 100644
--- a/crates/swc_css_parser/src/lexer/mod.rs
+++ b/crates/swc_css_parser/src/lexer/mod.rs
@@ -1,7 +1,12 @@
 use std::{cell::RefCell, char::REPLACEMENT_CHARACTER, rc::Rc};
 
 use swc_atoms::{Atom, JsWord};
-use swc_common::{input::Input, BytePos, Span};
+use swc_common::{
+    comments::{Comment, CommentKind, Comments},
+    input::Input,
+    util::take::Take,
+    BytePos, Span,
+};
 use swc_css_ast::{
     matches_eq_ignore_ascii_case, DimensionToken, NumberType, Token, TokenAndSpan, UrlKeyValue,
 };
@@ -13,11 +18,13 @@ use crate::{
 
 pub(crate) type LexResult<T> = Result<T, ErrorKind>;
 
-#[derive(Debug, Clone)]
-pub struct Lexer<I>
+#[derive(Clone)]
+pub struct Lexer<'a, I>
 where
     I: Input,
 {
+    comments: Option<&'a dyn Comments>,
+    pending_leading_comments: Vec<Comment>,
     input: I,
     cur: Option<char>,
     cur_pos: BytePos,
@@ -31,14 +38,15 @@ where
     errors: Rc<RefCell<Vec<Error>>>,
 }
 
-impl<I> Lexer<I>
+impl<'a, I> Lexer<'a, I>
 where
     I: Input,
 {
-    pub fn new(input: I, config: ParserConfig) -> Self {
+    pub fn new(input: I, comments: Option<&'a dyn Comments>, config: ParserConfig) -> Self {
         let start_pos = input.last_pos();
 
         Lexer {
+            comments,
             input,
             cur: None,
             cur_pos: start_pos,
@@ -49,6 +57,7 @@ where
             raw_buf: Rc::new(RefCell::new(String::with_capacity(256))),
             sub_buf: Rc::new(RefCell::new(String::with_capacity(32))),
             errors: Default::default(),
+            pending_leading_comments: Default::default(),
         }
     }
 
@@ -92,7 +101,7 @@ where
     }
 }
 
-impl<I: Input> Iterator for Lexer<I> {
+impl<I: Input> Iterator for Lexer<'_, I> {
     type Item = TokenAndSpan;
 
     fn next(&mut self) -> Option<Self::Item> {
@@ -122,7 +131,7 @@ pub struct LexerState {
     pos: BytePos,
 }
 
-impl<I> ParserInput for Lexer<I>
+impl<I> ParserInput for Lexer<'_, I>
 where
     I: Input,
 {
@@ -170,7 +179,7 @@ where
     }
 }
 
-impl<I> Lexer<I>
+impl<I> Lexer<'_, I>
 where
     I: Input,
 {
@@ -232,6 +241,12 @@ where
         self.read_comments();
         self.start_pos = self.input.last_pos();
 
+        if let Some(comments) = self.comments {
+            if !self.pending_leading_comments.is_empty() {
+                comments.add_leading_comments(self.start_pos, self.pending_leading_comments.take());
+            }
+        }
+
         // Consume the next input code point.
         match self.consume() {
             // whitespace
@@ -470,6 +485,8 @@ where
         // EOF code point. Return to the start of this step.
         // NOTE: We allow to parse line comments under the option.
         if self.next() == Some('/') && self.next_next() == Some('*') {
+            let cmt_start = self.input.last_pos();
+
             while self.next() == Some('/') && self.next_next() == Some('*') {
                 self.consume(); // '*'
                 self.consume(); // '/'
@@ -479,6 +496,20 @@ where
                         Some('*') if self.next() == Some('/') => {
                             self.consume(); // '/'
 
+                            if self.comments.is_some() {
+                                let last_pos = self.input.last_pos();
+                                let text = unsafe {
+                                    // Safety: last_pos is a valid position
+                                    self.input.slice(cmt_start, last_pos)
+                                };
+
+                                self.pending_leading_comments.push(Comment {
+                                    kind: CommentKind::Block,
+                                    span: (self.start_pos, last_pos).into(),
+                                    text: text.into(),
+                                });
+                            }
+
                             break;
                         }
                         None => {
@@ -506,9 +537,24 @@ where
                 self.consume(); // '/'
                 self.consume(); // '/'
 
+                let start_of_content = self.input.last_pos();
+
                 loop {
                     match self.consume() {
                         Some(c) if is_newline(c) => {
+                            if self.comments.is_some() {
+                                let last_pos = self.input.last_pos();
+                                let text = unsafe {
+                                    // Safety: last_pos is a valid position
+                                    self.input.slice(start_of_content, last_pos)
+                                };
+
+                                self.pending_leading_comments.push(Comment {
+                                    kind: CommentKind::Line,
+                                    span: (self.start_pos, last_pos).into(),
+                                    text: text.into(),
+                                });
+                            }
                             break;
                         }
                         None => return,
diff --git a/crates/swc_css_parser/src/lib.rs b/crates/swc_css_parser/src/lib.rs
index 198ca84c0106..b0f7252900fb 100644
--- a/crates/swc_css_parser/src/lib.rs
+++ b/crates/swc_css_parser/src/lib.rs
@@ -6,7 +6,7 @@
 #![allow(clippy::nonminimal_bool)]
 #![allow(clippy::wrong_self_convention)]
 
-use swc_common::{input::StringInput, SourceFile};
+use swc_common::{comments::Comments, input::StringInput, SourceFile};
 
 use crate::{
     error::Error,
@@ -42,30 +42,32 @@ where
 ///
 /// If there are syntax errors but if it was recoverable, it will be appended
 /// to `errors`.
-pub fn parse_file<'a, T>(
+pub fn parse_file<'a, 'b, T>(
     fm: &'a SourceFile,
+    comments: Option<&'b dyn Comments>,
     config: ParserConfig,
     errors: &mut Vec<Error>,
 ) -> PResult<T>
 where
-    Parser<Lexer<StringInput<'a>>>: Parse<T>,
+    Parser<Lexer<'b, StringInput<'a>>>: Parse<T>,
 {
-    parse_string_input(StringInput::from(fm), config, errors)
+    parse_string_input(StringInput::from(fm), comments, config, errors)
 }
 
 /// Parse a given [StringInput] as `T`.
 ///
 /// If there are syntax errors but if it was recoverable, it will be appended
 /// to `errors`.
-pub fn parse_string_input<'a, T>(
+pub fn parse_string_input<'a, 'b, T>(
     input: StringInput<'a>,
+    comments: Option<&'b dyn Comments>,
     config: ParserConfig,
     errors: &mut Vec<Error>,
 ) -> PResult<T>
 where
-    Parser<Lexer<StringInput<'a>>>: Parse<T>,
+    Parser<Lexer<'b, StringInput<'a>>>: Parse<T>,
 {
-    let lexer = Lexer::new(input, config);
+    let lexer = Lexer::new(input, comments, config);
     let mut parser = Parser::new(lexer, config);
 
     let res = parser.parse();
diff --git a/crates/swc_css_parser/src/parser/input.rs b/crates/swc_css_parser/src/parser/input.rs
index fc6c02a22472..b00353160f56 100644
--- a/crates/swc_css_parser/src/parser/input.rs
+++ b/crates/swc_css_parser/src/parser/input.rs
@@ -205,7 +205,7 @@ pub struct Tokens {
     pub tokens: Vec<TokenAndSpan>,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Clone)]
 pub struct Input<'a> {
     input: InputType<'a>,
     idx: Vec<usize>,
diff --git a/crates/swc_css_parser/tests/fixture.rs b/crates/swc_css_parser/tests/fixture.rs
index 8b406f20c027..0b41a7debeac 100644
--- a/crates/swc_css_parser/tests/fixture.rs
+++ b/crates/swc_css_parser/tests/fixture.rs
@@ -1,9 +1,11 @@
 #![deny(warnings)]
 #![allow(clippy::needless_update)]
 
-use std::path::PathBuf;
+use std::{path::PathBuf, rc::Rc};
 
-use swc_common::{errors::Handler, input::SourceFileInput, Span, Spanned};
+use swc_common::{
+    comments::SingleThreadedComments, errors::Handler, input::SourceFileInput, Span, Spanned,
+};
 use swc_css_ast::*;
 use swc_css_parser::{
     lexer::Lexer,
@@ -20,8 +22,10 @@ fn stylesheet_test(input: PathBuf, config: ParserConfig) {
     let ref_json_path = input.parent().unwrap().join("output.json");
 
     testing::run_test2(false, |cm, handler| {
+        let comments = SingleThreadedComments::default();
+
         let fm = cm.load_file(&input).unwrap();
-        let lexer = Lexer::new(SourceFileInput::from(&*fm), config);
+        let lexer = Lexer::new(SourceFileInput::from(&*fm), Some(&comments), config);
         let mut parser = Parser::new(lexer, config);
         let stylesheet = parser.parse_all();
         let errors = parser.take_errors();
@@ -42,6 +46,22 @@ fn stylesheet_test(input: PathBuf, config: ParserConfig) {
 
                 actual_json.compare_to_file(&ref_json_path).unwrap();
 
+                let (leading, trailing) = comments.take_all();
+                let leading = Rc::try_unwrap(leading).unwrap().into_inner();
+                let trailing = Rc::try_unwrap(trailing).unwrap().into_inner();
+
+                serde_json::to_string_pretty(&leading)
+                    .map(NormalizedOutput::from)
+                    .expect("failed to serialize comments")
+                    .compare_to_file(input.parent().unwrap().join("leading-comments.json"))
+                    .unwrap();
+
+                serde_json::to_string_pretty(&trailing)
+                    .map(NormalizedOutput::from)
+                    .expect("failed to serialize comments")
+                    .compare_to_file(input.parent().unwrap().join("trailing-comments.json"))
+                    .unwrap();
+
                 Ok(())
             }
             Err(err) => {
@@ -64,7 +84,7 @@ fn stylesheet_test_tokens(input: PathBuf, config: ParserConfig) {
         let fm = cm.load_file(&input).unwrap();
         let mut errors = vec![];
         let tokens = {
-            let mut lexer = Lexer::new(SourceFileInput::from(&*fm), Default::default());
+            let mut lexer = Lexer::new(SourceFileInput::from(&*fm), None, Default::default());
             let mut tokens = vec![];
 
             for token_and_span in lexer.by_ref() {
@@ -124,8 +144,10 @@ fn stylesheet_recovery_test(input: PathBuf, config: ParserConfig) {
             return Ok(());
         }
 
+        let comments = SingleThreadedComments::default();
+
         let fm = cm.load_file(&input).unwrap();
-        let lexer = Lexer::new(SourceFileInput::from(&*fm), config);
+        let lexer = Lexer::new(SourceFileInput::from(&*fm), Some(&comments), config);
         let mut parser = Parser::new(lexer, config);
         let stylesheet = parser.parse_all();
         let mut errors = parser.take_errors();
@@ -188,7 +210,7 @@ fn stylesheet_recovery_test_tokens(input: PathBuf, config: ParserConfig) {
         let fm = cm.load_file(&input).unwrap();
         let mut lexer_errors = vec![];
         let tokens = {
-            let mut lexer = Lexer::new(SourceFileInput::from(&*fm), Default::default());
+            let mut lexer = Lexer::new(SourceFileInput::from(&*fm), None, Default::default());
             let mut tokens = vec![];
 
             for token_and_span in lexer.by_ref() {
@@ -524,7 +546,7 @@ fn stylesheet_span_visualizer(input: PathBuf, config: Option<ParserConfig>) {
         };
 
         let fm = cm.load_file(&input).unwrap();
-        let lexer = Lexer::new(SourceFileInput::from(&*fm), config);
+        let lexer = Lexer::new(SourceFileInput::from(&*fm), None, config);
         let mut parser = Parser::new(lexer, config);
 
         let stylesheet = parser.parse_all();
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/charset/invalid/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/charset/invalid/leading-comments.json
new file mode 100644
index 000000000000..a1c08cee11a7
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/charset/invalid/leading-comments.json
@@ -0,0 +1,35 @@
+{
+  "124": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 83,
+        "end": 123,
+        "ctxt": 0
+      },
+      "text": "/* Invalid, more than one space */"
+    }
+  ],
+  "65": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 24,
+        "end": 64,
+        "ctxt": 0
+      },
+      "text": "/* Invalid, wrong quoting style used */"
+    }
+  ],
+  "212": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 141,
+        "end": 211,
+        "ctxt": 0
+      },
+      "text": "/* Invalid, there is a character (a space) before the at-rule */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/charset/invalid/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/charset/invalid/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/charset/invalid/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/charset/valid/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/charset/valid/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/charset/valid/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/charset/valid/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/charset/valid/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/charset/valid/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/color-profile/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/color-profile/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/color-profile/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/color-profile/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/color-profile/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/color-profile/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/container/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/container/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/container/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/container/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/container/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/container/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/counter-style/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/counter-style/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/counter-style/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/counter-style/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/counter-style/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/counter-style/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/custom-media/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/custom-media/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/custom-media/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/custom-media/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/custom-media/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/custom-media/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/document/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/document/leading-comments.json
new file mode 100644
index 000000000000..cba3937e77dc
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/document/leading-comments.json
@@ -0,0 +1,35 @@
+{
+  "432": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 419,
+        "end": 432,
+        "ctxt": 0
+      },
+      "text": "/* filter */"
+    }
+  ],
+  "461": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 453,
+        "end": 461,
+        "ctxt": 0
+      },
+      "text": "/* a */"
+    }
+  ],
+  "419": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 395,
+        "end": 419,
+        "ctxt": 0
+      },
+      "text": "/* near */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/document/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/document/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/document/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/font-face/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/font-face/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/font-face/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/font-face/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/font-face/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/font-face/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/font-feature-values/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/font-feature-values/leading-comments.json
new file mode 100644
index 000000000000..cae9d0ac9076
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/font-feature-values/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "478": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 432,
+        "end": 478,
+        "ctxt": 0
+      },
+      "text": "/* circled form defined for both fonts */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/font-feature-values/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/font-feature-values/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/font-feature-values/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/font-palette-values/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/font-palette-values/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/font-palette-values/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/font-palette-values/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/font-palette-values/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/font-palette-values/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/import/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/import/leading-comments.json
new file mode 100644
index 000000000000..77131101117c
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/import/leading-comments.json
@@ -0,0 +1,262 @@
+{
+  "4957": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 4937,
+        "end": 4957,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "4989": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 4972,
+        "end": 4989,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5236": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5222,
+        "end": 5236,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "4971": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 4957,
+        "end": 4971,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5003": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 4989,
+        "end": 5003,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5023": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5004,
+        "end": 5023,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5055": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5041,
+        "end": 5055,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5148": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5134,
+        "end": 5148,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5110": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5092,
+        "end": 5110,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5171": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5157,
+        "end": 5171,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5040": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5024,
+        "end": 5040,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5293": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5279,
+        "end": 5293,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "6591": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 6544,
+        "end": 6556,
+        "ctxt": 0
+      },
+      "text": "/*.foo {*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 6544,
+        "end": 6584,
+        "ctxt": 0
+      },
+      "text": "/*    @import 'path.css';*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 6544,
+        "end": 6590,
+        "ctxt": 0
+      },
+      "text": "/*}*/"
+    }
+  ],
+  "5092": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5078,
+        "end": 5092,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "4859": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 4845,
+        "end": 4859,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5077": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5055,
+        "end": 5077,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "4914": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 4900,
+        "end": 4914,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "4879": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 4860,
+        "end": 4879,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5199": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5185,
+        "end": 5199,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "4937": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 4915,
+        "end": 4937,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "5321": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 5307,
+        "end": 5321,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ],
+  "4899": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 4879,
+        "end": 4899,
+        "ctxt": 0
+      },
+      "text": "/* Comment */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/import/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/import/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/import/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/keyframe/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/keyframe/leading-comments.json
new file mode 100644
index 000000000000..6779921a8b44
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/keyframe/leading-comments.json
@@ -0,0 +1,35 @@
+{
+  "93": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 83,
+        "end": 93,
+        "ctxt": 0
+      },
+      "text": "/* ... */"
+    }
+  ],
+  "58": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 48,
+        "end": 58,
+        "ctxt": 0
+      },
+      "text": "/* ... */"
+    }
+  ],
+  "27": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 17,
+        "end": 27,
+        "ctxt": 0
+      },
+      "text": "/* ... */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/keyframe/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/keyframe/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/keyframe/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/layer/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/layer/leading-comments.json
new file mode 100644
index 000000000000..c94373a4684c
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/layer/leading-comments.json
@@ -0,0 +1,35 @@
+{
+  "365": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 351,
+        "end": 365,
+        "ctxt": 0
+      },
+      "text": "/* layer 1 */"
+    }
+  ],
+  "390": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 376,
+        "end": 390,
+        "ctxt": 0
+      },
+      "text": "/* layer 2 */"
+    }
+  ],
+  "861": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 778,
+        "end": 861,
+        "ctxt": 0
+      },
+      "text": "/* These styles will be added to the theme layer inside the framework layer */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/layer/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/layer/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/layer/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/media/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/media/leading-comments.json
new file mode 100644
index 000000000000..40005ad00292
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/media/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "4458": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 4432,
+        "end": 4456,
+        "ctxt": 0
+      },
+      "text": "/* General Enclosed */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/media/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/media/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/media/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/namespace/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/namespace/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/namespace/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/namespace/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/namespace/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/namespace/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/nest/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/nest/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/nest/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/nest/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/nest/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/nest/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/page/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/page/leading-comments.json
new file mode 100644
index 000000000000..f471e482cd29
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/page/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "292": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 256,
+        "end": 291,
+        "ctxt": 0
+      },
+      "text": "/*  identifier and pseudo page. */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/page/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/page/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/page/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/property/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/property/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/property/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/property/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/property/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/property/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/scope/basic/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/scope/basic/leading-comments.json
new file mode 100644
index 000000000000..4927f03753a7
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/scope/basic/leading-comments.json
@@ -0,0 +1,24 @@
+{
+  "179": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 129,
+        "end": 179,
+        "ctxt": 0
+      },
+      "text": "/* Only match links inside a light-scheme */"
+    }
+  ],
+  "59": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 9,
+        "end": 59,
+        "ctxt": 0
+      },
+      "text": "/* Only match links inside a light-scheme */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/scope/basic/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/scope/basic/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/scope/basic/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/scope/chromium/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/scope/chromium/leading-comments.json
new file mode 100644
index 000000000000..be47e5bd6b37
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/scope/chromium/leading-comments.json
@@ -0,0 +1,24 @@
+{
+  "73": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1,
+        "end": 73,
+        "ctxt": 0
+      },
+      "text": "/* https: //chromium-review.googlesource.com/c/chromium/src/+/4629290 */"
+    }
+  ],
+  "401": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 253,
+        "end": 401,
+        "ctxt": 0
+      },
+      "text": "/* The theme layer wins over the base layer. Note that @layer statements\n     are allowed here, but aren't affected by the enclosing @scope. */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/scope/chromium/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/scope/chromium/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/scope/chromium/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/scope/wpt/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/scope/wpt/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/scope/wpt/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/scope/wpt/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/scope/wpt/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/scope/wpt/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/starting-style/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/starting-style/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/starting-style/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/starting-style/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/starting-style/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/starting-style/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/supports/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/supports/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/supports/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/supports/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/supports/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/supports/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/unknown/leading-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/unknown/leading-comments.json
new file mode 100644
index 000000000000..6822da177a95
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/unknown/leading-comments.json
@@ -0,0 +1,387 @@
+{
+  "938": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 929,
+        "end": 938,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "893": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 884,
+        "end": 893,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "1109": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 948,
+        "end": 1108,
+        "ctxt": 0
+      },
+      "text": "/*@unknown !*test*!x!*test*!,!*test*!y!*test*! f(!*test*!1!*test*!+!*test*!2!*test*!)!*test*!{!*test*!s!*test*!{!*test*!p!*test*!:!*test*!v!*test*!}!*test*!}*/"
+    }
+  ],
+  "884": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 875,
+        "end": 884,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "318": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 309,
+        "end": 318,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "309": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 300,
+        "end": 309,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "300": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 291,
+        "end": 300,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "291": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 282,
+        "end": 291,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "282": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 266,
+        "end": 282,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "346": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 337,
+        "end": 346,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "337": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 328,
+        "end": 337,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "78": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 69,
+        "end": 78,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "846": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 837,
+        "end": 846,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "392": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 383,
+        "end": 392,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "837": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 828,
+        "end": 837,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "383": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 374,
+        "end": 383,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "828": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 819,
+        "end": 828,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "374": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 365,
+        "end": 374,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "819": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 810,
+        "end": 819,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "947": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 938,
+        "end": 947,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "365": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 356,
+        "end": 365,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "106": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 97,
+        "end": 106,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "810": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 801,
+        "end": 810,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "356": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 347,
+        "end": 356,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "97": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 88,
+        "end": 97,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "801": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 792,
+        "end": 801,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "865": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 856,
+        "end": 865,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "792": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 783,
+        "end": 792,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "874": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 865,
+        "end": 874,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "920": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 911,
+        "end": 920,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "527": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 393,
+        "end": 526,
+        "ctxt": 0
+      },
+      "text": "/*@unknown !*test*!x!*test*!,!*test*!y!*test*! x(!*test*!1!*test*!+!*test*!2!*test*!)!*test*!{!*test*!p!*test*!:!*test*!v!*test*!}*/"
+    }
+  ],
+  "783": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 767,
+        "end": 783,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "911": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 902,
+        "end": 911,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "902": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 893,
+        "end": 902,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "929": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 920,
+        "end": 929,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/at-rule/unknown/trailing-comments.json b/crates/swc_css_parser/tests/fixture/at-rule/unknown/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/at-rule/unknown/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/bom/leading-comments.json b/crates/swc_css_parser/tests/fixture/bom/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/bom/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/bom/trailing-comments.json b/crates/swc_css_parser/tests/fixture/bom/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/bom/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/cdo-and-cdc/leading-comments.json b/crates/swc_css_parser/tests/fixture/cdo-and-cdc/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/cdo-and-cdc/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/cdo-and-cdc/trailing-comments.json b/crates/swc_css_parser/tests/fixture/cdo-and-cdc/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/cdo-and-cdc/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/comment/leading-comments.json b/crates/swc_css_parser/tests/fixture/comment/leading-comments.json
new file mode 100644
index 000000000000..22b1de83309e
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/comment/leading-comments.json
@@ -0,0 +1,270 @@
+{
+  "506": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 360,
+        "end": 371,
+        "ctxt": 0
+      },
+      "text": "/*!test*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 360,
+        "end": 382,
+        "ctxt": 0
+      },
+      "text": "/*!te\nst*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 360,
+        "end": 395,
+        "ctxt": 0
+      },
+      "text": "/*!te\n\n\nst*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 360,
+        "end": 407,
+        "ctxt": 0
+      },
+      "text": "/*!te**st*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 360,
+        "end": 438,
+        "ctxt": 0
+      },
+      "text": "/****************************/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 360,
+        "end": 478,
+        "ctxt": 0
+      },
+      "text": "/*************** FOO *****************/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 360,
+        "end": 492,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 360,
+        "end": 505,
+        "ctxt": 0
+      },
+      "text": "/* comment *//* comment */"
+    }
+  ],
+  "238": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 228,
+        "end": 236,
+        "ctxt": 0
+      },
+      "text": "/* b */"
+    }
+  ],
+  "14": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1,
+        "end": 14,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "133": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 95,
+        "end": 121,
+        "ctxt": 0
+      },
+      "text": "/* a { color: black } */"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 95,
+        "end": 126,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 95,
+        "end": 132,
+        "ctxt": 0
+      },
+      "text": "/* */"
+    }
+  ],
+  "226": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 212,
+        "end": 226,
+        "ctxt": 0
+      },
+      "text": "/* end */"
+    }
+  ],
+  "191": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 173,
+        "end": 191,
+        "ctxt": 0
+      },
+      "text": "/* between */"
+    }
+  ],
+  "92": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 76,
+        "end": 92,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "313": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 294,
+        "end": 313,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "28": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 14,
+        "end": 28,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "357": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 343,
+        "end": 357,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "336": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 322,
+        "end": 336,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "62": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 44,
+        "end": 62,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "155": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 138,
+        "end": 155,
+        "ctxt": 0
+      },
+      "text": "/* inside */"
+    }
+  ],
+  "271": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 259,
+        "end": 271,
+        "ctxt": 0
+      },
+      "text": "/* c */"
+    }
+  ],
+  "76": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 62,
+        "end": 76,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "44": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 30,
+        "end": 44,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "294": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 275,
+        "end": 294,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/comment/trailing-comments.json b/crates/swc_css_parser/tests/fixture/comment/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/comment/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/dashed-ident/leading-comments.json b/crates/swc_css_parser/tests/fixture/dashed-ident/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/dashed-ident/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/dashed-ident/trailing-comments.json b/crates/swc_css_parser/tests/fixture/dashed-ident/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/dashed-ident/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/declaration-list/leading-comments.json b/crates/swc_css_parser/tests/fixture/declaration-list/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/declaration-list/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/declaration-list/trailing-comments.json b/crates/swc_css_parser/tests/fixture/declaration-list/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/declaration-list/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/declaration/leading-comments.json b/crates/swc_css_parser/tests/fixture/declaration/leading-comments.json
new file mode 100644
index 000000000000..8374634917ca
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/declaration/leading-comments.json
@@ -0,0 +1,24 @@
+{
+  "601": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 593,
+        "end": 601,
+        "ctxt": 0
+      },
+      "text": "/* ; */"
+    }
+  ],
+  "527": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 519,
+        "end": 527,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/declaration/trailing-comments.json b/crates/swc_css_parser/tests/fixture/declaration/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/declaration/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/delim/backslash/leading-comments.json b/crates/swc_css_parser/tests/fixture/delim/backslash/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/delim/backslash/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/delim/backslash/trailing-comments.json b/crates/swc_css_parser/tests/fixture/delim/backslash/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/delim/backslash/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/dimension/basic/leading-comments.json b/crates/swc_css_parser/tests/fixture/dimension/basic/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/dimension/basic/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/dimension/basic/trailing-comments.json b/crates/swc_css_parser/tests/fixture/dimension/basic/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/dimension/basic/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/empty/leading-comments.json b/crates/swc_css_parser/tests/fixture/empty/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/empty/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/empty/trailing-comments.json b/crates/swc_css_parser/tests/fixture/empty/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/empty/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/calc/leading-comments.json b/crates/swc_css_parser/tests/fixture/function/calc/leading-comments.json
new file mode 100644
index 000000000000..e9928e2d4c4f
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/calc/leading-comments.json
@@ -0,0 +1,46 @@
+{
+  "1779": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1718,
+        "end": 1779,
+        "ctxt": 0
+      },
+      "text": "/* Force the font-size to stay between 12px and 100px */"
+    }
+  ],
+  "1277": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1224,
+        "end": 1277,
+        "ctxt": 0
+      },
+      "text": "/*height: -webkit-calc(9/16 * 100%)!important;*/"
+    }
+  ],
+  "1319": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1277,
+        "end": 1319,
+        "ctxt": 0
+      },
+      "text": "/*width: -moz-calc((50px - 50%)*2);*/"
+    }
+  ],
+  "1659": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1561,
+        "end": 1659,
+        "ctxt": 0
+      },
+      "text": "/* Set font-size to 10x the average of vw and vh,\n       but don’t let it go below 12px. */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/function/calc/trailing-comments.json b/crates/swc_css_parser/tests/fixture/function/calc/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/calc/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/element/leading-comments.json b/crates/swc_css_parser/tests/fixture/function/element/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/element/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/element/trailing-comments.json b/crates/swc_css_parser/tests/fixture/function/element/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/element/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/linear-gradient/leading-comments.json b/crates/swc_css_parser/tests/fixture/function/linear-gradient/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/linear-gradient/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/linear-gradient/trailing-comments.json b/crates/swc_css_parser/tests/fixture/function/linear-gradient/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/linear-gradient/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/mix/leading-comments.json b/crates/swc_css_parser/tests/fixture/function/mix/leading-comments.json
new file mode 100644
index 000000000000..db3fd82a6ca0
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/mix/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "98": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 6,
+        "end": 98,
+        "ctxt": 0
+      },
+      "text": "/*   mix( [ <timeline> && [ by <easing-function> ]? ] ; <start-value> ; <end-value>) */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/function/mix/trailing-comments.json b/crates/swc_css_parser/tests/fixture/function/mix/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/mix/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/unknown/leading-comments.json b/crates/swc_css_parser/tests/fixture/function/unknown/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/unknown/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/unknown/trailing-comments.json b/crates/swc_css_parser/tests/fixture/function/unknown/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/unknown/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/url/leading-comments.json b/crates/swc_css_parser/tests/fixture/function/url/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/url/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/url/trailing-comments.json b/crates/swc_css_parser/tests/fixture/function/url/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/url/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/var/leading-comments.json b/crates/swc_css_parser/tests/fixture/function/var/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/var/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/function/var/trailing-comments.json b/crates/swc_css_parser/tests/fixture/function/var/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/function/var/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/hacks/leading-comments.json b/crates/swc_css_parser/tests/fixture/hacks/leading-comments.json
new file mode 100644
index 000000000000..ee1e8e2921ef
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/hacks/leading-comments.json
@@ -0,0 +1,35 @@
+{
+  "12": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 7,
+        "end": 12,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ],
+  "185": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 171,
+        "end": 185,
+        "ctxt": 0
+      },
+      "text": "/*\\**/"
+    }
+  ],
+  "42": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 37,
+        "end": 42,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/hacks/trailing-comments.json b/crates/swc_css_parser/tests/fixture/hacks/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/hacks/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/hex-colors/leading-comments.json b/crates/swc_css_parser/tests/fixture/hex-colors/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/hex-colors/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/hex-colors/trailing-comments.json b/crates/swc_css_parser/tests/fixture/hex-colors/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/hex-colors/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/important/basic/leading-comments.json b/crates/swc_css_parser/tests/fixture/important/basic/leading-comments.json
new file mode 100644
index 000000000000..0261653548e0
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/important/basic/leading-comments.json
@@ -0,0 +1,46 @@
+{
+  "416": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 404,
+        "end": 416,
+        "ctxt": 0
+      },
+      "text": "/*! test */"
+    }
+  ],
+  "483": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 471,
+        "end": 483,
+        "ctxt": 0
+      },
+      "text": "/* sep */"
+    }
+  ],
+  "375": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 363,
+        "end": 375,
+        "ctxt": 0
+      },
+      "text": "/*! test */"
+    }
+  ],
+  "331": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 319,
+        "end": 331,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/important/basic/trailing-comments.json b/crates/swc_css_parser/tests/fixture/important/basic/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/important/basic/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/number/leading-comments.json b/crates/swc_css_parser/tests/fixture/number/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/number/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/number/trailing-comments.json b/crates/swc_css_parser/tests/fixture/number/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/number/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/only/1/leading-comments.json b/crates/swc_css_parser/tests/fixture/only/1/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/only/1/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/only/1/trailing-comments.json b/crates/swc_css_parser/tests/fixture/only/1/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/only/1/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/property/escaped/leading-comments.json b/crates/swc_css_parser/tests/fixture/property/escaped/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/property/escaped/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/property/escaped/trailing-comments.json b/crates/swc_css_parser/tests/fixture/property/escaped/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/property/escaped/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/attribute/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/attribute/leading-comments.json
new file mode 100644
index 000000000000..44b47dcd7d52
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/attribute/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "823": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 815,
+        "end": 823,
+        "ctxt": 0
+      },
+      "text": "/*)*/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/selector/attribute/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/attribute/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/attribute/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/class/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/class/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/class/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/class/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/class/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/class/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/comments/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/comments/leading-comments.json
new file mode 100644
index 000000000000..130a785247f8
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/comments/leading-comments.json
@@ -0,0 +1,200 @@
+{
+  "256": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 245,
+        "end": 256,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ],
+  "285": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 274,
+        "end": 285,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ],
+  "215": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 205,
+        "end": 215,
+        "ctxt": 0
+      },
+      "text": "/* { } */"
+    }
+  ],
+  "95": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 84,
+        "end": 95,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ],
+  "147": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 137,
+        "end": 147,
+        "ctxt": 0
+      },
+      "text": "/* { } */"
+    }
+  ],
+  "272": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 261,
+        "end": 272,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ],
+  "10": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1,
+        "end": 10,
+        "ctxt": 0
+      },
+      "text": "/* { } */"
+    }
+  ],
+  "199": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 188,
+        "end": 199,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ],
+  "164": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 153,
+        "end": 164,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ],
+  "129": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 118,
+        "end": 129,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ],
+  "62": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 50,
+        "end": 61,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ],
+  "27": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 16,
+        "end": 27,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ],
+  "231": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 220,
+        "end": 231,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ],
+  "181": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 171,
+        "end": 181,
+        "ctxt": 0
+      },
+      "text": "/* { } */"
+    }
+  ],
+  "245": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 234,
+        "end": 245,
+        "ctxt": 0
+      },
+      "text": "/* test */"
+    }
+  ],
+  "111": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 101,
+        "end": 111,
+        "ctxt": 0
+      },
+      "text": "/* { } */"
+    }
+  ],
+  "79": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 69,
+        "end": 79,
+        "ctxt": 0
+      },
+      "text": "/* { } */"
+    }
+  ],
+  "44": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 33,
+        "end": 43,
+        "ctxt": 0
+      },
+      "text": "/* { } */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/selector/comments/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/comments/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/comments/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/complex/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/complex/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/complex/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/complex/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/complex/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/complex/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/compound/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/compound/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/compound/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/compound/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/compound/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/compound/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/id/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/id/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/id/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/id/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/id/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/id/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/list/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/list/leading-comments.json
new file mode 100644
index 000000000000..d2507406dec9
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/list/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "343": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 333,
+        "end": 343,
+        "ctxt": 0
+      },
+      "text": "/* { } */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/selector/list/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/list/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/list/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/nesting/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/nesting/leading-comments.json
new file mode 100644
index 000000000000..c1805157331c
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/nesting/leading-comments.json
@@ -0,0 +1,71 @@
+{
+  "1393": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1311,
+        "end": 1393,
+        "ctxt": 0
+      },
+      "text": "/* valid, starts with a colon,\n       and equivalent to the previous rule. */"
+    }
+  ],
+  "1278": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1225,
+        "end": 1278,
+        "ctxt": 0
+      },
+      "text": "/* valid, no longer starts with an identifier */"
+    }
+  ],
+  "647": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 559,
+        "end": 578,
+        "ctxt": 0
+      },
+      "text": "/* TODO fix me */"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 559,
+        "end": 589,
+        "ctxt": 0
+      },
+      "text": "/*.foo {*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 559,
+        "end": 610,
+        "ctxt": 0
+      },
+      "text": "/*    color: blue;*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 559,
+        "end": 639,
+        "ctxt": 0
+      },
+      "text": "/*    && { padding: 2ch; }*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 559,
+        "end": 645,
+        "ctxt": 0
+      },
+      "text": "/*}*/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/selector/nesting/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/nesting/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/nesting/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/an-plus-b/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/an-plus-b/leading-comments.json
new file mode 100644
index 000000000000..83d57b7c7e8f
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/an-plus-b/leading-comments.json
@@ -0,0 +1,90 @@
+{
+  "1505": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1496,
+        "end": 1505,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "1534": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1511,
+        "end": 1534,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "1563": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1554,
+        "end": 1563,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "1496": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1487,
+        "end": 1496,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "1477": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1459,
+        "end": 1477,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "1554": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1545,
+        "end": 1554,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "1487": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1477,
+        "end": 1487,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ],
+  "1545": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1534,
+        "end": 1545,
+        "ctxt": 0
+      },
+      "text": "/*test*/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/an-plus-b/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/an-plus-b/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/an-plus-b/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/any/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/any/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/any/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/any/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/any/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/any/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/basic/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/basic/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/basic/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/basic/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/basic/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/basic/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/current/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/current/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/current/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/current/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/current/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/current/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/dir/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/dir/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/dir/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/dir/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/dir/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/dir/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/future/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/future/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/future/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/future/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/future/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/future/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/has/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/has/leading-comments.json
new file mode 100644
index 000000000000..9a56bc247f49
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/has/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "301": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 283,
+        "end": 300,
+        "ctxt": 0
+      },
+      "text": "/* Forgiving */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/has/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/has/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/has/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host-context/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host-context/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host-context/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host-context/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host-context/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host-context/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/host/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/is/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/is/leading-comments.json
new file mode 100644
index 000000000000..ab0cde4b8ac6
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/is/leading-comments.json
@@ -0,0 +1,33 @@
+{
+  "376": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 323,
+        "end": 353,
+        "ctxt": 0
+      },
+      "text": "/*:is(:valid, foo < bar) {}*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 323,
+        "end": 375,
+        "ctxt": 0
+      },
+      "text": "/*:is(foo < bar) {}*/"
+    }
+  ],
+  "719": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 701,
+        "end": 718,
+        "ctxt": 0
+      },
+      "text": "/* Forgiving */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/is/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/is/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/is/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/lang/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/lang/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/lang/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/lang/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/lang/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/lang/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/matches/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/matches/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/matches/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/matches/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/matches/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/matches/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/not/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/not/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/not/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/not/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/not/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/not/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/past/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/past/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/past/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/past/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/past/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/past/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/unknown/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/unknown/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/unknown/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/unknown/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/unknown/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/unknown/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/where/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/where/leading-comments.json
new file mode 100644
index 000000000000..49db94caee59
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/where/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "828": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 810,
+        "end": 827,
+        "ctxt": 0
+      },
+      "text": "/* Forgiving */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-class/where/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/where/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-class/where/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/basic/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/basic/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/basic/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/basic/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/basic/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/basic/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue-region/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue-region/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue-region/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue-region/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue-region/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue-region/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/cue/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/escaped/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/escaped/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/escaped/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/escaped/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/escaped/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/escaped/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/highlight/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/highlight/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/highlight/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/highlight/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/highlight/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/highlight/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/part/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/part/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/part/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/part/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/part/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/part/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/slotted/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/slotted/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/slotted/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/slotted/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/slotted/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/slotted/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/unknown/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/unknown/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/unknown/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/pseudo-element/unknown/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/unknown/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/pseudo-element/unknown/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/selector/type/leading-comments.json b/crates/swc_css_parser/tests/fixture/selector/type/leading-comments.json
new file mode 100644
index 000000000000..f94347044fd9
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/type/leading-comments.json
@@ -0,0 +1,24 @@
+{
+  "245": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 240,
+        "end": 245,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ],
+  "253": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 248,
+        "end": 253,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/selector/type/trailing-comments.json b/crates/swc_css_parser/tests/fixture/selector/type/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/selector/type/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/style-block/leading-comments.json b/crates/swc_css_parser/tests/fixture/style-block/leading-comments.json
new file mode 100644
index 000000000000..2f1c7dfb74c3
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/style-block/leading-comments.json
@@ -0,0 +1,35 @@
+{
+  "968": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 926,
+        "end": 967,
+        "ctxt": 0
+      },
+      "text": "/* Legacy stuff, but allowed by spec */"
+    }
+  ],
+  "1233": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1225,
+        "end": 1233,
+        "ctxt": 0
+      },
+      "text": "/* ; */"
+    }
+  ],
+  "1295": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1290,
+        "end": 1295,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/style-block/trailing-comments.json b/crates/swc_css_parser/tests/fixture/style-block/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/style-block/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/styled-jsx/selector/1/leading-comments.json b/crates/swc_css_parser/tests/fixture/styled-jsx/selector/1/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/styled-jsx/selector/1/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/styled-jsx/selector/1/trailing-comments.json b/crates/swc_css_parser/tests/fixture/styled-jsx/selector/1/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/styled-jsx/selector/1/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/styled-jsx/selector/2/leading-comments.json b/crates/swc_css_parser/tests/fixture/styled-jsx/selector/2/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/styled-jsx/selector/2/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/styled-jsx/selector/2/trailing-comments.json b/crates/swc_css_parser/tests/fixture/styled-jsx/selector/2/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/styled-jsx/selector/2/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/stylesheet/cdo-and-cdc/leading-comments.json b/crates/swc_css_parser/tests/fixture/stylesheet/cdo-and-cdc/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/stylesheet/cdo-and-cdc/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/stylesheet/cdo-and-cdc/trailing-comments.json b/crates/swc_css_parser/tests/fixture/stylesheet/cdo-and-cdc/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/stylesheet/cdo-and-cdc/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/stylesheet/empty/leading-comments.json b/crates/swc_css_parser/tests/fixture/stylesheet/empty/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/stylesheet/empty/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/stylesheet/empty/trailing-comments.json b/crates/swc_css_parser/tests/fixture/stylesheet/empty/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/stylesheet/empty/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/stylis/comma/01/leading-comments.json b/crates/swc_css_parser/tests/fixture/stylis/comma/01/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/stylis/comma/01/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/stylis/comma/01/trailing-comments.json b/crates/swc_css_parser/tests/fixture/stylis/comma/01/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/stylis/comma/01/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/turbo/4092/leading-comments.json b/crates/swc_css_parser/tests/fixture/turbo/4092/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/turbo/4092/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/turbo/4092/trailing-comments.json b/crates/swc_css_parser/tests/fixture/turbo/4092/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/turbo/4092/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/angle/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/angle/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/angle/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/angle/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/angle/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/angle/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/color/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/color/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/color/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/color/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/color/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/color/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/custom-property/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/custom-property/leading-comments.json
new file mode 100644
index 000000000000..744640472912
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/custom-property/leading-comments.json
@@ -0,0 +1,46 @@
+{
+  "280": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 275,
+        "end": 280,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ],
+  "313": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 305,
+        "end": 313,
+        "ctxt": 0
+      },
+      "text": "/* 1 */"
+    }
+  ],
+  "321": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 313,
+        "end": 321,
+        "ctxt": 0
+      },
+      "text": "/* 2 */"
+    }
+  ],
+  "235": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 230,
+        "end": 235,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/value/custom-property/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/custom-property/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/custom-property/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/dimension/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/dimension/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/dimension/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/dimension/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/dimension/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/dimension/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/escaped/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/escaped/leading-comments.json
new file mode 100644
index 000000000000..ce76bd88ab07
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/escaped/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "172": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 164,
+        "end": 172,
+        "ctxt": 0
+      },
+      "text": "/*)*/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/value/escaped/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/escaped/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/escaped/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/frequency/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/frequency/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/frequency/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/frequency/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/frequency/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/frequency/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/ident/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/ident/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/ident/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/ident/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/ident/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/ident/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/integer/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/integer/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/integer/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/integer/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/integer/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/integer/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/length/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/length/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/length/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/length/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/length/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/length/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/percentage/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/percentage/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/percentage/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/percentage/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/percentage/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/percentage/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/quotes/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/quotes/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/quotes/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/quotes/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/quotes/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/quotes/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/resolution/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/resolution/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/resolution/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/resolution/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/resolution/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/resolution/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/square-brackets/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/square-brackets/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/square-brackets/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/square-brackets/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/square-brackets/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/square-brackets/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/time/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/time/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/time/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/time/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/time/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/time/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/urange/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/urange/leading-comments.json
new file mode 100644
index 000000000000..15e2248ef943
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/urange/leading-comments.json
@@ -0,0 +1,57 @@
+{
+  "253": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 224,
+        "end": 253,
+        "ctxt": 0
+      },
+      "text": "/* codepoint range */"
+    }
+  ],
+  "455": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 433,
+        "end": 455,
+        "ctxt": 0
+      },
+      "text": "/* multiple values */"
+    }
+  ],
+  "140": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 103,
+        "end": 140,
+        "ctxt": 0
+      },
+      "text": "/* single codepoint */"
+    }
+  ],
+  "313": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 279,
+        "end": 313,
+        "ctxt": 0
+      },
+      "text": "/* wildcard range */"
+    }
+  ],
+  "374": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 352,
+        "end": 374,
+        "ctxt": 0
+      },
+      "text": "/* multiple values */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/value/urange/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/urange/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/urange/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/value/url/leading-comments.json b/crates/swc_css_parser/tests/fixture/value/url/leading-comments.json
new file mode 100644
index 000000000000..4303efd404ce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/url/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "541": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 466,
+        "end": 541,
+        "ctxt": 0
+      },
+      "text": "/* A <url-modifier> is either an <ident> or a functional notation. */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/value/url/trailing-comments.json b/crates/swc_css_parser/tests/fixture/value/url/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/value/url/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/csstree/basic/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/csstree/basic/leading-comments.json
new file mode 100644
index 000000000000..7aba6b22e5a3
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/csstree/basic/leading-comments.json
@@ -0,0 +1,46 @@
+{
+  "493": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 371,
+        "end": 493,
+        "ctxt": 0
+      },
+      "text": "/*filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='img.png',sizingMethod='scale') alpha(opacity=80);*/"
+    }
+  ],
+  "1114": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1099,
+        "end": 1113,
+        "ctxt": 0
+      },
+      "text": "/* CDO/CDC */"
+    }
+  ],
+  "527": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 493,
+        "end": 527,
+        "ctxt": 0
+      },
+      "text": "/*width: expression(1 + 2);*/"
+    }
+  ],
+  "17": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1,
+        "end": 17,
+        "ctxt": 0
+      },
+      "text": "/*! something */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/csstree/basic/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/csstree/basic/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/csstree/basic/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-4j83DwgJa0nPQIjlb0RIA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-4j83DwgJa0nPQIjlb0RIA/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-4j83DwgJa0nPQIjlb0RIA/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-4j83DwgJa0nPQIjlb0RIA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-4j83DwgJa0nPQIjlb0RIA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-4j83DwgJa0nPQIjlb0RIA/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-8o_H6sq86TDAHqF7YO0hg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-8o_H6sq86TDAHqF7YO0hg/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-8o_H6sq86TDAHqF7YO0hg/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-8o_H6sq86TDAHqF7YO0hg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-8o_H6sq86TDAHqF7YO0hg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-8o_H6sq86TDAHqF7YO0hg/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-GZJfOA9TK6La2KGGNgCkg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-GZJfOA9TK6La2KGGNgCkg/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-GZJfOA9TK6La2KGGNgCkg/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-GZJfOA9TK6La2KGGNgCkg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-GZJfOA9TK6La2KGGNgCkg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-GZJfOA9TK6La2KGGNgCkg/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-JoxoRcnA-zaaEC7RjXKvQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-JoxoRcnA-zaaEC7RjXKvQ/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-JoxoRcnA-zaaEC7RjXKvQ/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-JoxoRcnA-zaaEC7RjXKvQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-JoxoRcnA-zaaEC7RjXKvQ/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-JoxoRcnA-zaaEC7RjXKvQ/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-b4VODLSeaV93gwC2Ot2tw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-b4VODLSeaV93gwC2Ot2tw/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-b4VODLSeaV93gwC2Ot2tw/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-b4VODLSeaV93gwC2Ot2tw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-b4VODLSeaV93gwC2Ot2tw/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-b4VODLSeaV93gwC2Ot2tw/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-edvtxlXMemv5jnGeyueBA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-edvtxlXMemv5jnGeyueBA/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-edvtxlXMemv5jnGeyueBA/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-edvtxlXMemv5jnGeyueBA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-edvtxlXMemv5jnGeyueBA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-edvtxlXMemv5jnGeyueBA/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-gboAEi1zyjFW5mtEM24Rg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-gboAEi1zyjFW5mtEM24Rg/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-gboAEi1zyjFW5mtEM24Rg/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-gboAEi1zyjFW5mtEM24Rg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-gboAEi1zyjFW5mtEM24Rg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/-gboAEi1zyjFW5mtEM24Rg/trailing-comments.json
@@ -0,0 +1 @@
+{}
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@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4Tjjgepnha63E4UiXXDNEA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4Tjjgepnha63E4UiXXDNEA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4Tjjgepnha63E4UiXXDNEA/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4UaOTazLwrr9gd5xkBBlnw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4UaOTazLwrr9gd5xkBBlnw/leading-comments.json
new file mode 100644
index 000000000000..68313237a030
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4UaOTazLwrr9gd5xkBBlnw/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "6": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1,
+        "end": 6,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4UaOTazLwrr9gd5xkBBlnw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4UaOTazLwrr9gd5xkBBlnw/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4UaOTazLwrr9gd5xkBBlnw/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4WSp4-HbKB-f1GLF00sf6A/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4WSp4-HbKB-f1GLF00sf6A/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4WSp4-HbKB-f1GLF00sf6A/leading-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4WSp4-HbKB-f1GLF00sf6A/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4WSp4-HbKB-f1GLF00sf6A/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4WSp4-HbKB-f1GLF00sf6A/trailing-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4_H2sj_CNmUQHGctk7geQQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4_H2sj_CNmUQHGctk7geQQ/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4_H2sj_CNmUQHGctk7geQQ/leading-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4_H2sj_CNmUQHGctk7geQQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4_H2sj_CNmUQHGctk7geQQ/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/4_H2sj_CNmUQHGctk7geQQ/trailing-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/52obp49U0CyYOskQAEoIJw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/52obp49U0CyYOskQAEoIJw/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/52obp49U0CyYOskQAEoIJw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/52obp49U0CyYOskQAEoIJw/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/52obp49U0CyYOskQAEoIJw/trailing-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/53OltIbJ-YBXtSKedVvYwA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/53OltIbJ-YBXtSKedVvYwA/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/53OltIbJ-YBXtSKedVvYwA/leading-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/53OltIbJ-YBXtSKedVvYwA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/53OltIbJ-YBXtSKedVvYwA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/53OltIbJ-YBXtSKedVvYwA/trailing-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/54mhLGCwQMwsuiVkiTzAAQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/54mhLGCwQMwsuiVkiTzAAQ/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/54mhLGCwQMwsuiVkiTzAAQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/54mhLGCwQMwsuiVkiTzAAQ/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5IxIPW9sKkvdZIzfV33AcA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5IxIPW9sKkvdZIzfV33AcA/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5IxIPW9sKkvdZIzfV33AcA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5IxIPW9sKkvdZIzfV33AcA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5al65IRQbw_x4yG3ke74fQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5al65IRQbw_x4yG3ke74fQ/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5al65IRQbw_x4yG3ke74fQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5al65IRQbw_x4yG3ke74fQ/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5cnGKjYPm1XBeqTmw3oCag/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5cnGKjYPm1XBeqTmw3oCag/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5cnGKjYPm1XBeqTmw3oCag/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5cnGKjYPm1XBeqTmw3oCag/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5nNFwUYmVb5_MMMzIvIeQg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5nNFwUYmVb5_MMMzIvIeQg/leading-comments.json
new file mode 100644
index 000000000000..9b2f030cd777
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5nNFwUYmVb5_MMMzIvIeQg/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "7": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 2,
+        "end": 7,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5nNFwUYmVb5_MMMzIvIeQg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/5nNFwUYmVb5_MMMzIvIeQg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/6IWHWiWjsuGkPiPAp2KmoA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/6IWHWiWjsuGkPiPAp2KmoA/leading-comments.json
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7Wto7epgdmJCos0XkrnMww/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "7": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 2,
+        "end": 7,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7Wto7epgdmJCos0XkrnMww/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7Wto7epgdmJCos0XkrnMww/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7Wto7epgdmJCos0XkrnMww/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7YGXOizztR38f8fGB1DRaQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7YGXOizztR38f8fGB1DRaQ/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7YGXOizztR38f8fGB1DRaQ/leading-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7YGXOizztR38f8fGB1DRaQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7YGXOizztR38f8fGB1DRaQ/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7YGXOizztR38f8fGB1DRaQ/trailing-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7q6h33W5r1sx-W3Q7DipjA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7q6h33W5r1sx-W3Q7DipjA/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7q6h33W5r1sx-W3Q7DipjA/leading-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7q6h33W5r1sx-W3Q7DipjA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/7q6h33W5r1sx-W3Q7DipjA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/866Law8W0FQas7QMxFjUbw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/866Law8W0FQas7QMxFjUbw/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/866Law8W0FQas7QMxFjUbw/leading-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/866Law8W0FQas7QMxFjUbw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/866Law8W0FQas7QMxFjUbw/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/866Law8W0FQas7QMxFjUbw/trailing-comments.json
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/8Gs_Q4kYqijbgIQ6xIW8qw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/8Gs_Q4kYqijbgIQ6xIW8qw/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/8Gs_Q4kYqijbgIQ6xIW8qw/leading-comments.json
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/8Gs_Q4kYqijbgIQ6xIW8qw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/8Gs_Q4kYqijbgIQ6xIW8qw/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/8Gs_Q4kYqijbgIQ6xIW8qw/trailing-comments.json
@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/8R-UUShF-1EmQSj6_GQwrA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/8R-UUShF-1EmQSj6_GQwrA/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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@@ -0,0 +1 @@
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/8R-UUShF-1EmQSj6_GQwrA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/8R-UUShF-1EmQSj6_GQwrA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/9IIa-42s3YQFw8ilk39GdQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/9IIa-42s3YQFw8ilk39GdQ/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/9IIa-42s3YQFw8ilk39GdQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/9IIa-42s3YQFw8ilk39GdQ/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/9aSeJQPn4WHMexejaMQQoQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/9aSeJQPn4WHMexejaMQQoQ/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/9aSeJQPn4WHMexejaMQQoQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/9aSeJQPn4WHMexejaMQQoQ/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/A3jvzrmJH_MIf_Uilsy4sg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/A3jvzrmJH_MIf_Uilsy4sg/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/A3jvzrmJH_MIf_Uilsy4sg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/A3jvzrmJH_MIf_Uilsy4sg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/ACQUsGVQAmGzhMqBRmS6Mw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/ACQUsGVQAmGzhMqBRmS6Mw/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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new file mode 100644
index 000000000000..0967ef424bce
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new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/ATZbhYBr7fOFJoZ4E2dwkA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/ATZbhYBr7fOFJoZ4E2dwkA/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/ATZbhYBr7fOFJoZ4E2dwkA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/ATZbhYBr7fOFJoZ4E2dwkA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/AVaQlt9z0lhJC6bHHDPVeA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/AVaQlt9z0lhJC6bHHDPVeA/leading-comments.json
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Ae5_auBp274oaSQ0kls9sw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Ae5_auBp274oaSQ0kls9sw/leading-comments.json
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/F-AbRDwG_3dGLhE7pzr5aA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/F-AbRDwG_3dGLhE7pzr5aA/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/FTOGKsI_y1QxMNEu_Fgq7Q/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/FTOGKsI_y1QxMNEu_Fgq7Q/leading-comments.json
new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/FlqjDLebWxQvNIxKppBllw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/FlqjDLebWxQvNIxKppBllw/leading-comments.json
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/FlqjDLebWxQvNIxKppBllw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/FlqjDLebWxQvNIxKppBllw/trailing-comments.json
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/GC0pcFQY1xSlq9QsgSvEVg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/GC0pcFQY1xSlq9QsgSvEVg/leading-comments.json
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/GVqeF3thmlPBqLweHlqIJQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/GVqeF3thmlPBqLweHlqIJQ/leading-comments.json
new file mode 100644
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+    {
+      "kind": "Block",
+      "span": {
+        "start": 1,
+        "end": 6,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/GVqeF3thmlPBqLweHlqIJQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/GVqeF3thmlPBqLweHlqIJQ/trailing-comments.json
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Jir2h5-Giw9AVhE3ep3_sg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Jir2h5-Giw9AVhE3ep3_sg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Jmhb8p_Oc2-nzkcDSk0dww/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Jmhb8p_Oc2-nzkcDSk0dww/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Jmhb8p_Oc2-nzkcDSk0dww/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Jmhb8p_Oc2-nzkcDSk0dww/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/JygAjyd3aaFifbGpuMgJOA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/JygAjyd3aaFifbGpuMgJOA/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/JygAjyd3aaFifbGpuMgJOA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/JygAjyd3aaFifbGpuMgJOA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/L0mEf41IMkWcP7NotllkAg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/L0mEf41IMkWcP7NotllkAg/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/L0mEf41IMkWcP7NotllkAg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/L0mEf41IMkWcP7NotllkAg/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/LoeMqdekBkn3XKYHQFHOZA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/LoeMqdekBkn3XKYHQFHOZA/leading-comments.json
new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Loy9sX2qaylR2OySt7N-BQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Loy9sX2qaylR2OySt7N-BQ/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Loy9sX2qaylR2OySt7N-BQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Loy9sX2qaylR2OySt7N-BQ/trailing-comments.json
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/U2nuhvtnEWZ_kMd6i7EDWA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/U2nuhvtnEWZ_kMd6i7EDWA/leading-comments.json
new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Uuvi9sS4YR_ILpKl0xpfOg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Uuvi9sS4YR_ILpKl0xpfOg/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/V6ATfoZsbJDwKWSnlREl-w/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/V6ATfoZsbJDwKWSnlREl-w/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Yc70giIIGDIddrjD858dDw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Yc70giIIGDIddrjD858dDw/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Yc70giIIGDIddrjD858dDw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Yc70giIIGDIddrjD858dDw/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Z4J4sVA4UnGhTMiN5tdMMQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Z4J4sVA4UnGhTMiN5tdMMQ/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Z4J4sVA4UnGhTMiN5tdMMQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Z4J4sVA4UnGhTMiN5tdMMQ/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Zb1jcH156xr4eFiUgmg-jg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Zb1jcH156xr4eFiUgmg-jg/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Zb1jcH156xr4eFiUgmg-jg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Zb1jcH156xr4eFiUgmg-jg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Zs-lk0YqEDjxCU3XgCScQQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Zs-lk0YqEDjxCU3XgCScQQ/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Zs-lk0YqEDjxCU3XgCScQQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/Zs-lk0YqEDjxCU3XgCScQQ/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_-29x4xnx6IaJMmYrOsypA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_-29x4xnx6IaJMmYrOsypA/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_-29x4xnx6IaJMmYrOsypA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_-29x4xnx6IaJMmYrOsypA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_APxY5Pe47Bb71-CwD1nhw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_APxY5Pe47Bb71-CwD1nhw/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_APxY5Pe47Bb71-CwD1nhw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_APxY5Pe47Bb71-CwD1nhw/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_PPlU8tyR27_briQT0VeOg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_PPlU8tyR27_briQT0VeOg/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_PPlU8tyR27_briQT0VeOg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_PPlU8tyR27_briQT0VeOg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_U4zAUbS93Xo7_tJOolGuA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_U4zAUbS93Xo7_tJOolGuA/leading-comments.json
new file mode 100644
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new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_XB1oeHz4bZ49LCE2cBI6g/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_XB1oeHz4bZ49LCE2cBI6g/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_XB1oeHz4bZ49LCE2cBI6g/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_XB1oeHz4bZ49LCE2cBI6g/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_d22bZcPKDgNEKSyJ2NRsQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_d22bZcPKDgNEKSyJ2NRsQ/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_d22bZcPKDgNEKSyJ2NRsQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_d22bZcPKDgNEKSyJ2NRsQ/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_e6qpZBWfowEh1P3Wn3orA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_e6qpZBWfowEh1P3Wn3orA/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_e6qpZBWfowEh1P3Wn3orA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_e6qpZBWfowEh1P3Wn3orA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_qcmYeHAxw35hMnF2IST8A/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_qcmYeHAxw35hMnF2IST8A/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_qcmYeHAxw35hMnF2IST8A/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/_qcmYeHAxw35hMnF2IST8A/trailing-comments.json
new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/a-wik1bC7k04EzrSSB0gcw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/a-wik1bC7k04EzrSSB0gcw/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/a0Yurt7E7InOYieD7nMCXg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/a0Yurt7E7InOYieD7nMCXg/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/a0Yurt7E7InOYieD7nMCXg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/a0Yurt7E7InOYieD7nMCXg/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/a7KElWOMF9ilrSsoliHkcg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/a7KElWOMF9ilrSsoliHkcg/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/a7KElWOMF9ilrSsoliHkcg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/a7KElWOMF9ilrSsoliHkcg/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/aDkLP2LEPmyD_ImzrGw8SQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/aDkLP2LEPmyD_ImzrGw8SQ/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/aDkLP2LEPmyD_ImzrGw8SQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/aDkLP2LEPmyD_ImzrGw8SQ/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/aEF_NRb2u-g7UzHxaKpOfA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/aEF_NRb2u-g7UzHxaKpOfA/leading-comments.json
new file mode 100644
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@@ -0,0 +1,13 @@
+{
+  "6": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1,
+        "end": 6,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/aEF_NRb2u-g7UzHxaKpOfA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/aEF_NRb2u-g7UzHxaKpOfA/trailing-comments.json
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/eHdhrm6W2iHKQegxH7uEgw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/eHdhrm6W2iHKQegxH7uEgw/leading-comments.json
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/i3YGyP16CjaKe5cnWygVeQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/i3YGyP16CjaKe5cnWygVeQ/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/i3YGyP16CjaKe5cnWygVeQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/i3YGyP16CjaKe5cnWygVeQ/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/i7oy_7cYzOxuhIPcZo1yow/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/i7oy_7cYzOxuhIPcZo1yow/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/i7oy_7cYzOxuhIPcZo1yow/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/i7oy_7cYzOxuhIPcZo1yow/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/inMW5rttJFPDfH0aKVFg_Q/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/inMW5rttJFPDfH0aKVFg_Q/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/inMW5rttJFPDfH0aKVFg_Q/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/inMW5rttJFPDfH0aKVFg_Q/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/isfWm5W8qb6_aJSz_bdwDw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/isfWm5W8qb6_aJSz_bdwDw/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/isfWm5W8qb6_aJSz_bdwDw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/isfWm5W8qb6_aJSz_bdwDw/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/j9dr5-Ih68VDH1exMwsmZA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/j9dr5-Ih68VDH1exMwsmZA/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/j9dr5-Ih68VDH1exMwsmZA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/j9dr5-Ih68VDH1exMwsmZA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jD_IvFQVk8LtCrictrWpxw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jD_IvFQVk8LtCrictrWpxw/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jD_IvFQVk8LtCrictrWpxw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jD_IvFQVk8LtCrictrWpxw/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jbIIxHeXTPO0PtiubVziHQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jbIIxHeXTPO0PtiubVziHQ/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jbIIxHeXTPO0PtiubVziHQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jbIIxHeXTPO0PtiubVziHQ/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jdLujY0rTP02e0KuCnvbvg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jdLujY0rTP02e0KuCnvbvg/leading-comments.json
new file mode 100644
index 000000000000..68313237a030
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@@ -0,0 +1,13 @@
+{
+  "6": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1,
+        "end": 6,
+        "ctxt": 0
+      },
+      "text": "/**/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jdLujY0rTP02e0KuCnvbvg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jdLujY0rTP02e0KuCnvbvg/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jzpj5gTOBgKB1ITBDfJiNA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jzpj5gTOBgKB1ITBDfJiNA/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jzpj5gTOBgKB1ITBDfJiNA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/jzpj5gTOBgKB1ITBDfJiNA/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/kVdd5WJZqKSou4cGvcL40g/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/kVdd5WJZqKSou4cGvcL40g/leading-comments.json
new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/kdJ9F7n35563o0T6W1TEXw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/kdJ9F7n35563o0T6W1TEXw/leading-comments.json
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/mJEhy0k_dxoszsTVHb3x_Q/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/mJEhy0k_dxoszsTVHb3x_Q/leading-comments.json
new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
index 000000000000..0967ef424bce
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/qsC9vwnhYfmqVreVrA1SEg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/qsC9vwnhYfmqVreVrA1SEg/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/qsC9vwnhYfmqVreVrA1SEg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/qsC9vwnhYfmqVreVrA1SEg/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/rAzJtA56igpCO-gN3gRrYw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/rAzJtA56igpCO-gN3gRrYw/leading-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/rAzJtA56igpCO-gN3gRrYw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/rAzJtA56igpCO-gN3gRrYw/trailing-comments.json
new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/rGv8hpoRRBbCTlyQ-70xVw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/rGv8hpoRRBbCTlyQ-70xVw/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/rPWYt0NoxD_TvsI8Xrhvyg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/rPWYt0NoxD_TvsI8Xrhvyg/leading-comments.json
new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/rZIFO-RMBeLmmQK8U6nNmQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/rZIFO-RMBeLmmQK8U6nNmQ/leading-comments.json
new file mode 100644
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new file mode 100644
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diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/s6SbuS-mSQuuf1eQzngAFw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/s6SbuS-mSQuuf1eQzngAFw/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
index 000000000000..0967ef424bce
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
index 000000000000..0967ef424bce
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+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vCiwe_ipn8ReAa4wyU52Ng/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vCiwe_ipn8ReAa4wyU52Ng/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vCiwe_ipn8ReAa4wyU52Ng/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vCiwe_ipn8ReAa4wyU52Ng/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vFNgwFW2EHA0WTOoSWhSTg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vFNgwFW2EHA0WTOoSWhSTg/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vFNgwFW2EHA0WTOoSWhSTg/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vFNgwFW2EHA0WTOoSWhSTg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vFNgwFW2EHA0WTOoSWhSTg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vFNgwFW2EHA0WTOoSWhSTg/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vIco-E1oKlSzuggLOcviNg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vIco-E1oKlSzuggLOcviNg/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vIco-E1oKlSzuggLOcviNg/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vIco-E1oKlSzuggLOcviNg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vIco-E1oKlSzuggLOcviNg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vIco-E1oKlSzuggLOcviNg/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vJrDZy-xgYNUTNK3uei3cg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vJrDZy-xgYNUTNK3uei3cg/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vJrDZy-xgYNUTNK3uei3cg/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vJrDZy-xgYNUTNK3uei3cg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vJrDZy-xgYNUTNK3uei3cg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vJrDZy-xgYNUTNK3uei3cg/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vN7xRB9YekSqanW68eIoNA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vN7xRB9YekSqanW68eIoNA/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vN7xRB9YekSqanW68eIoNA/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vN7xRB9YekSqanW68eIoNA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vN7xRB9YekSqanW68eIoNA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/vN7xRB9YekSqanW68eIoNA/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wEB80kxMinK4EZaPb3My1A/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wEB80kxMinK4EZaPb3My1A/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wEB80kxMinK4EZaPb3My1A/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wEB80kxMinK4EZaPb3My1A/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wEB80kxMinK4EZaPb3My1A/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wEB80kxMinK4EZaPb3My1A/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wIDDuubF_bj7wmG8T_koVw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wIDDuubF_bj7wmG8T_koVw/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wIDDuubF_bj7wmG8T_koVw/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wIDDuubF_bj7wmG8T_koVw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wIDDuubF_bj7wmG8T_koVw/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wIDDuubF_bj7wmG8T_koVw/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wwLEw52LUKMFH3Wp5CaBAQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wwLEw52LUKMFH3Wp5CaBAQ/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wwLEw52LUKMFH3Wp5CaBAQ/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wwLEw52LUKMFH3Wp5CaBAQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wwLEw52LUKMFH3Wp5CaBAQ/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/wwLEw52LUKMFH3Wp5CaBAQ/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xc1mD3YfHByTKL-N-FL49A/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xc1mD3YfHByTKL-N-FL49A/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xc1mD3YfHByTKL-N-FL49A/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xc1mD3YfHByTKL-N-FL49A/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xc1mD3YfHByTKL-N-FL49A/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xc1mD3YfHByTKL-N-FL49A/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xdJ7w6fdV3po3r2aWrgPdA/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xdJ7w6fdV3po3r2aWrgPdA/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xdJ7w6fdV3po3r2aWrgPdA/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xdJ7w6fdV3po3r2aWrgPdA/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xdJ7w6fdV3po3r2aWrgPdA/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/xdJ7w6fdV3po3r2aWrgPdA/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yOHW3TOE35U7DAf9Hn7-Ew/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yOHW3TOE35U7DAf9Hn7-Ew/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yOHW3TOE35U7DAf9Hn7-Ew/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yOHW3TOE35U7DAf9Hn7-Ew/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yOHW3TOE35U7DAf9Hn7-Ew/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yOHW3TOE35U7DAf9Hn7-Ew/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yVqdwpiB7OK23Te5mXKdFw/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yVqdwpiB7OK23Te5mXKdFw/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yVqdwpiB7OK23Te5mXKdFw/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yVqdwpiB7OK23Te5mXKdFw/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yVqdwpiB7OK23Te5mXKdFw/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yVqdwpiB7OK23Te5mXKdFw/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yboE7Tr5zjKHy9-m10AZTg/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yboE7Tr5zjKHy9-m10AZTg/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yboE7Tr5zjKHy9-m10AZTg/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yboE7Tr5zjKHy9-m10AZTg/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yboE7Tr5zjKHy9-m10AZTg/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/yboE7Tr5zjKHy9-m10AZTg/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zUuWz4A8Y6yZO8JMLAe2fQ/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zUuWz4A8Y6yZO8JMLAe2fQ/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zUuWz4A8Y6yZO8JMLAe2fQ/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zUuWz4A8Y6yZO8JMLAe2fQ/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zUuWz4A8Y6yZO8JMLAe2fQ/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zUuWz4A8Y6yZO8JMLAe2fQ/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zz_B6vK87VUHpkOMFR_R1g/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zz_B6vK87VUHpkOMFR_R1g/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zz_B6vK87VUHpkOMFR_R1g/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zz_B6vK87VUHpkOMFR_R1g/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zz_B6vK87VUHpkOMFR_R1g/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/misc/zz_B6vK87VUHpkOMFR_R1g/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/value/mixed-separator-01/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/value/mixed-separator-01/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/value/mixed-separator-01/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/esbuild/value/mixed-separator-01/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/esbuild/value/mixed-separator-01/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/esbuild/value/mixed-separator-01/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-margin-properties/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-margin-properties/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-margin-properties/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-margin-properties/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-margin-properties/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-margin-properties/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties-case-insensitive/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties-case-insensitive/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties-case-insensitive/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties-case-insensitive/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties-case-insensitive/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties-case-insensitive/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/page-properties/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/at-page/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/calc/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/calc/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/calc/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/calc/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/calc/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/calc/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/comment/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/comment/leading-comments.json
new file mode 100644
index 000000000000..e8df33fc1b5f
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/comment/leading-comments.json
@@ -0,0 +1,46 @@
+{
+  "53": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 39,
+        "end": 53,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "82": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 68,
+        "end": 82,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "108": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 94,
+        "end": 108,
+        "ctxt": 0
+      },
+      "text": "/* comment */"
+    }
+  ],
+  "19": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1,
+        "end": 19,
+        "ctxt": 0
+      },
+      "text": "/*\n * comments\n */"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/comment/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/comment/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/comment/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/custom-properties/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/custom-properties/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/custom-properties/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/custom-properties/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/custom-properties/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/custom-properties/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/fit-content/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/fit-content/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/fit-content/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/fit-content/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/fit-content/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/fit-content/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/font/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/font/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/font/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/font/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/font/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/font/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/functions/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/functions/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/functions/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/functions/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/functions/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/functions/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/minmax/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/minmax/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/minmax/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/minmax/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/minmax/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/minmax/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/fit-content/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/fit-content/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/fit-content/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/fit-content/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/fit-content/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/fit-content/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/flex/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/flex/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/flex/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/flex/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/flex/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/flex/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/line-name/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/line-name/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/line-name/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/line-name/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/line-name/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/line-name/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/minmax/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/minmax/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/minmax/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/minmax/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/minmax/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/minmax/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/multi-values/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/multi-values/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/multi-values/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/multi-values/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/multi-values/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/grid/repeat/multi-values/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/import/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/import/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/import/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/import/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/import/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/import/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/keyframe/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/keyframe/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/keyframe/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/keyframe/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/keyframe/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/keyframe/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/media/condition/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/media/condition/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/media/condition/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/media/condition/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/media/condition/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/media/condition/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/media/feature/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/media/feature/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/media/feature/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/media/feature/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/media/feature/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/media/feature/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/media/ratio/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/media/ratio/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/media/ratio/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/media/ratio/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/media/ratio/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/media/ratio/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/media/type/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/media/type/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/media/type/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/media/type/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/media/type/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/media/type/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/min-and-max/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/min-and-max/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/min-and-max/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/min-and-max/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/min-and-max/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/min-and-max/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/selectors/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/selectors/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/selectors/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/selectors/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/selectors/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/selectors/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/smoke/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/smoke/leading-comments.json
new file mode 100644
index 000000000000..6401dbdafedc
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/smoke/leading-comments.json
@@ -0,0 +1,69 @@
+{
+  "221": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 79,
+        "end": 124,
+        "ctxt": 0
+      },
+      "text": "/*@media screen and (min-width: 1337px) {*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 79,
+        "end": 139,
+        "ctxt": 0
+      },
+      "text": "/*    body {*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 79,
+        "end": 169,
+        "ctxt": 0
+      },
+      "text": "/*        background: blue;*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 79,
+        "end": 204,
+        "ctxt": 0
+      },
+      "text": "/*        width: calc(2px + 3%);*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 79,
+        "end": 214,
+        "ctxt": 0
+      },
+      "text": "/*    }*/"
+    },
+    {
+      "kind": "Block",
+      "span": {
+        "start": 79,
+        "end": 220,
+        "ctxt": 0
+      },
+      "text": "/*}*/"
+    }
+  ],
+  "22": [
+    {
+      "kind": "Block",
+      "span": {
+        "start": 1,
+        "end": 22,
+        "ctxt": 0
+      },
+      "text": "/*This is a comment*/"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/smoke/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/smoke/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/smoke/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/supports/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/supports/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/supports/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/supports/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/supports/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/supports/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/values/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/values/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/values/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/rome/values/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/rome/values/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/rome/values/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/vercel/001/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/vercel/001/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/vercel/001/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/vercel/001/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/vercel/001/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/vercel/001/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/vercel/002/leading-comments.json b/crates/swc_css_parser/tests/fixture/vendor/vercel/002/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/vercel/002/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/fixture/vendor/vercel/002/trailing-comments.json b/crates/swc_css_parser/tests/fixture/vendor/vercel/002/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/fixture/vendor/vercel/002/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/1/leading-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/1/leading-comments.json
new file mode 100644
index 000000000000..2183276feaf6
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/1/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "17": [
+    {
+      "kind": "Line",
+      "span": {
+        "start": 1,
+        "end": 17,
+        "ctxt": 0
+      },
+      "text": " Line comment\n"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/1/trailing-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/1/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/1/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/10/leading-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/10/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/10/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/10/trailing-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/10/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/10/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/11/leading-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/11/leading-comments.json
new file mode 100644
index 000000000000..92688d00b7de
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/11/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "9": [
+    {
+      "kind": "Line",
+      "span": {
+        "start": 1,
+        "end": 9,
+        "ctxt": 0
+      },
+      "text": " test\n"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/11/trailing-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/11/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/11/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/2/leading-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/2/leading-comments.json
new file mode 100644
index 000000000000..ee01d40268da
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/2/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "27": [
+    {
+      "kind": "Line",
+      "span": {
+        "start": 6,
+        "end": 27,
+        "ctxt": 0
+      },
+      "text": " Line comment\n"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/2/trailing-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/2/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/2/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/3/leading-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/3/leading-comments.json
new file mode 100644
index 000000000000..741bc1d4f2f7
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/3/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "43": [
+    {
+      "kind": "Line",
+      "span": {
+        "start": 22,
+        "end": 43,
+        "ctxt": 0
+      },
+      "text": " Line comment\n"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/3/trailing-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/3/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/3/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/4/leading-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/4/leading-comments.json
new file mode 100644
index 000000000000..741bc1d4f2f7
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/4/leading-comments.json
@@ -0,0 +1,13 @@
+{
+  "43": [
+    {
+      "kind": "Line",
+      "span": {
+        "start": 22,
+        "end": 43,
+        "ctxt": 0
+      },
+      "text": " Line comment\n"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/4/trailing-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/4/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/4/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/5/leading-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/5/leading-comments.json
new file mode 100644
index 000000000000..aa412a40029d
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/5/leading-comments.json
@@ -0,0 +1,22 @@
+{
+  "33": [
+    {
+      "kind": "Line",
+      "span": {
+        "start": 1,
+        "end": 17,
+        "ctxt": 0
+      },
+      "text": " Line comment\n"
+    },
+    {
+      "kind": "Line",
+      "span": {
+        "start": 1,
+        "end": 33,
+        "ctxt": 0
+      },
+      "text": " Line comment\n"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/5/trailing-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/5/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/5/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/6/leading-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/6/leading-comments.json
new file mode 100644
index 000000000000..063cb54090f1
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/6/leading-comments.json
@@ -0,0 +1,24 @@
+{
+  "47": [
+    {
+      "kind": "Line",
+      "span": {
+        "start": 27,
+        "end": 47,
+        "ctxt": 0
+      },
+      "text": " Line comment\n"
+    }
+  ],
+  "27": [
+    {
+      "kind": "Line",
+      "span": {
+        "start": 6,
+        "end": 27,
+        "ctxt": 0
+      },
+      "text": " Line comment\n"
+    }
+  ]
+}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/6/trailing-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/6/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/6/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/7/leading-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/7/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/7/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/7/trailing-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/7/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/7/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/8/leading-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/8/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/8/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/8/trailing-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/8/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/8/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/9/leading-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/9/leading-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/9/leading-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_parser/tests/line-comment/css-in-js/9/trailing-comments.json b/crates/swc_css_parser/tests/line-comment/css-in-js/9/trailing-comments.json
new file mode 100644
index 000000000000..0967ef424bce
--- /dev/null
+++ b/crates/swc_css_parser/tests/line-comment/css-in-js/9/trailing-comments.json
@@ -0,0 +1 @@
+{}
diff --git a/crates/swc_css_prefixer/tests/prefixer.rs b/crates/swc_css_prefixer/tests/prefixer.rs
index 3e837829ce67..67a65220dd43 100644
--- a/crates/swc_css_prefixer/tests/prefixer.rs
+++ b/crates/swc_css_prefixer/tests/prefixer.rs
@@ -31,6 +31,7 @@ fn prefix(input: PathBuf, options: Options, suffix: Option<&str>) {
         let mut errors = vec![];
         let mut ss: Stylesheet = parse_file(
             &fm,
+            None,
             ParserConfig {
                 allow_wrong_line_comments: true,
                 ..Default::default()
diff --git a/crates/swc_html_minifier/src/lib.rs b/crates/swc_html_minifier/src/lib.rs
index 17a974cd7187..8183f66319d6 100644
--- a/crates/swc_html_minifier/src/lib.rs
+++ b/crates/swc_html_minifier/src/lib.rs
@@ -2153,7 +2153,7 @@ impl Minifier<'_> {
 
         let mut stylesheet = match mode {
             CssMinificationMode::Stylesheet => {
-                match swc_css_parser::parse_file(&fm, options.parser, &mut errors) {
+                match swc_css_parser::parse_file(&fm, None, options.parser, &mut errors) {
                     Ok(stylesheet) => stylesheet,
                     _ => return None,
                 }
@@ -2161,6 +2161,7 @@ impl Minifier<'_> {
             CssMinificationMode::ListOfDeclarations => {
                 match swc_css_parser::parse_file::<Vec<swc_css_ast::DeclarationOrAtRule>>(
                     &fm,
+                    None,
                     options.parser,
                     &mut errors,
                 ) {
@@ -2201,6 +2202,7 @@ impl Minifier<'_> {
             CssMinificationMode::MediaQueryList => {
                 match swc_css_parser::parse_file::<swc_css_ast::MediaQueryList>(
                     &fm,
+                    None,
                     options.parser,
                     &mut errors,
                 ) {
diff --git a/crates/swc_plugin_runner/tests/css_rkyv.rs b/crates/swc_plugin_runner/tests/css_rkyv.rs
index 7944ad2dbc41..68f0c0ad1ec8 100644
--- a/crates/swc_plugin_runner/tests/css_rkyv.rs
+++ b/crates/swc_plugin_runner/tests/css_rkyv.rs
@@ -84,7 +84,7 @@ fn invoke(input: PathBuf) -> Result<(), Error> {
         let fm = cm.new_source_file(FileName::Anon, "console.log(foo)".into());
 
         let parsed: Stylesheet =
-            swc_css_parser::parse_file(&fm, Default::default(), &mut vec![]).unwrap();
+            swc_css_parser::parse_file(&fm, None, Default::default(), &mut vec![]).unwrap();
 
         let program = PluginSerializedBytes::try_serialize(
             &swc_common::plugin::serialized::VersionedSerializable::new(parsed.clone()),
@@ -135,7 +135,7 @@ fn invoke(input: PathBuf) -> Result<(), Error> {
         let fm = cm.new_source_file(FileName::Anon, "console.log(foo)".into());
 
         let parsed: Stylesheet =
-            swc_css_parser::parse_file(&fm, Default::default(), &mut vec![]).unwrap();
+            swc_css_parser::parse_file(&fm, None, Default::default(), &mut vec![]).unwrap();
 
         let mut serialized_program = PluginSerializedBytes::try_serialize(
             &swc_common::plugin::serialized::VersionedSerializable::new(parsed.clone()),