From 8f6a528c40816ae2d6958f57534df8f41d37f52e Mon Sep 17 00:00:00 2001
From: magic-akari <akari.ccino@gmail.com>
Date: Fri, 7 Apr 2023 20:11:38 +0800
Subject: [PATCH] Handle class method overloads

---
 .../src/strip_type.rs                         | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/crates/swc_ecma_transforms_typescript/src/strip_type.rs b/crates/swc_ecma_transforms_typescript/src/strip_type.rs
index 0516b2f93becb..5dd99d879bf83 100644
--- a/crates/swc_ecma_transforms_typescript/src/strip_type.rs
+++ b/crates/swc_ecma_transforms_typescript/src/strip_type.rs
@@ -154,6 +154,35 @@ impl VisitMut for StripType {
 
         n.visit_mut_children_with(self);
     }
+
+    fn visit_mut_class_members(&mut self, n: &mut Vec<ClassMember>) {
+        n.retain(|member| match member {
+            ClassMember::TsIndexSignature(..) => false,
+            ClassMember::Constructor(Constructor { body: None, .. }) => false,
+
+            ClassMember::Method(ClassMethod {
+                is_abstract,
+                function,
+                ..
+            })
+            | ClassMember::PrivateMethod(PrivateMethod {
+                is_abstract,
+                function,
+                ..
+            }) => !is_abstract && function.body.is_some(),
+
+            ClassMember::ClassProp(
+                ClassProp { declare: true, .. }
+                | ClassProp {
+                    is_abstract: true, ..
+                },
+            ) => false,
+
+            _ => true,
+        });
+
+        n.visit_mut_children_with(self);
+    }
 }
 
 impl StripType {