diff --git a/crates/swc_ecma_transforms_module/src/path.rs b/crates/swc_ecma_transforms_module/src/path.rs
index 75637e87322d..67378f5fe563 100644
--- a/crates/swc_ecma_transforms_module/src/path.rs
+++ b/crates/swc_ecma_transforms_module/src/path.rs
@@ -121,13 +121,17 @@ where
 
             if let Some(orig_ext) = orig_ext {
                 let use_orig = if let Some(ext) = p.extension() {
-                    (ext == "ts" || ext == "tsx") && p.is_file()
+                    ext == "ts" || ext == "tsx"
                 } else {
                     false
                 };
 
                 if use_orig {
-                    p.set_extension(orig_ext);
+                    if matches!(orig_ext, "js" | "mjs" | "cjs" | "jsx") {
+                        p.set_extension(orig_ext);
+                    } else {
+                        p.set_extension("");
+                    }
                 }
             } else {
                 p.set_extension("");
diff --git a/crates/swc_ecma_transforms_module/tests/paths/issue-4532/output/index.ts b/crates/swc_ecma_transforms_module/tests/paths/issue-4532/output/index.ts
index 7cc1229f0a67..a6dad7b1a7bd 100644
--- a/crates/swc_ecma_transforms_module/tests/paths/issue-4532/output/index.ts
+++ b/crates/swc_ecma_transforms_module/tests/paths/issue-4532/output/index.ts
@@ -1 +1 @@
-import "./rel.ts";
+import "./rel.js";
diff --git a/crates/swc_ecma_transforms_module/tests/paths/issue-4585/output/index.ts b/crates/swc_ecma_transforms_module/tests/paths/issue-4585/output/index.ts
index c1a93de2a8ee..6c84f6bfbe5d 100644
--- a/crates/swc_ecma_transforms_module/tests/paths/issue-4585/output/index.ts
+++ b/crates/swc_ecma_transforms_module/tests/paths/issue-4585/output/index.ts
@@ -1 +1 @@
-import "./src/feat.ts";
+import "./src/feat.js";
diff --git a/crates/swc_ecma_transforms_module/tests/paths/issue-4605/1/output/index.ts b/crates/swc_ecma_transforms_module/tests/paths/issue-4605/1/output/index.ts
index c15108b16ba7..37dcc5d213e8 100644
--- a/crates/swc_ecma_transforms_module/tests/paths/issue-4605/1/output/index.ts
+++ b/crates/swc_ecma_transforms_module/tests/paths/issue-4605/1/output/index.ts
@@ -1 +1 @@
-import "./src/rel.decorator.ts";
+import "./src/rel.decorator.js";
diff --git a/crates/swc_ecma_transforms_module/tests/paths/issue-4605/2/output/index.ts b/crates/swc_ecma_transforms_module/tests/paths/issue-4605/2/output/index.ts
index c15108b16ba7..2061bc752252 100644
--- a/crates/swc_ecma_transforms_module/tests/paths/issue-4605/2/output/index.ts
+++ b/crates/swc_ecma_transforms_module/tests/paths/issue-4605/2/output/index.ts
@@ -1 +1 @@
-import "./src/rel.decorator.ts";
+import "./src/rel.decorator";
diff --git a/crates/swc_ecma_transforms_module/tests/paths/issue-4619/1/output/index.ts b/crates/swc_ecma_transforms_module/tests/paths/issue-4619/1/output/index.ts
index c15108b16ba7..37dcc5d213e8 100644
--- a/crates/swc_ecma_transforms_module/tests/paths/issue-4619/1/output/index.ts
+++ b/crates/swc_ecma_transforms_module/tests/paths/issue-4619/1/output/index.ts
@@ -1 +1 @@
-import "./src/rel.decorator.ts";
+import "./src/rel.decorator.js";
diff --git a/crates/swc_ecma_transforms_module/tests/paths/issue-4619/2/output/index.ts b/crates/swc_ecma_transforms_module/tests/paths/issue-4619/2/output/index.ts
index c15108b16ba7..2061bc752252 100644
--- a/crates/swc_ecma_transforms_module/tests/paths/issue-4619/2/output/index.ts
+++ b/crates/swc_ecma_transforms_module/tests/paths/issue-4619/2/output/index.ts
@@ -1 +1 @@
-import "./src/rel.decorator.ts";
+import "./src/rel.decorator";