feat(rome_js_parser): EcmaScript @decorators #4252

crates/rome_js_formatter/tests/quick_test.rs

@@ -13,14 +13,13 @@ mod language {
 // use this test check if your snippet prints as you wish, without using a snapshot
 fn quick_test() {
     let src = r#"
-class A {
-	@dec()
-	 // comment
-	accessor b;
+abstract class Something3 {
+    @foo()
+    // comment
+    abstract method(): Array<string>
 }
 
 
-
 "#;
     let syntax = SourceType::tsx();
     let tree = parse(src, syntax);

crates/rome_js_formatter/tests/specs/prettier/typescript/decorators/decorators-comments.ts.snap

@@ -167,18 +167,6 @@ decorators-comments.ts:35:5 parse ━━━━━━━━━━━━━━━
     36 │ }
     37 │ 
   
-decorators-comments.ts:33:5 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
-
-  × Decorators are not valid here.
-  
-    32 │ class Something2 {
-  > 33 │     @foo()
-       │     ^^^^^^
-    34 │     // comment
-    35 │     abstract property: Array<string>
-  
-  i Decorators are only valid on class declarations, class expressions, and class methods.
-  
 decorators-comments.ts:41:5 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 
   × Only abstract classes can have abstract members
@@ -190,18 +178,6 @@ decorators-comments.ts:41:5 parse ━━━━━━━━━━━━━━━
     42 │ }
     43 │ 
   
-decorators-comments.ts:39:5 parse ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
-
-  × Decorators are not valid here.
-  
-    38 │ class Something3 {
-  > 39 │     @foo()
-       │     ^^^^^^
-    40 │     // comment
-    41 │     abstract method(): Array<string>
-  
-  i Decorators are only valid on class declarations, class expressions, and class methods.
-  
 
 ```
 

crates/rome_js_parser/src/syntax/class.rs

@@ -2160,6 +2160,8 @@ impl ClassMemberModifiers {
                     | JS_METHOD_CLASS_MEMBER
                     | JS_GETTER_CLASS_MEMBER
                     | JS_SETTER_CLASS_MEMBER
+                    | TS_METHOD_SIGNATURE_CLASS_MEMBER
+                    | TS_PROPERTY_SIGNATURE_CLASS_MEMBER
             )
         {
             // test ts decorator_parameters_constructor