From 9c9c3ebd2c9c4141e3449e19926636a77741980a 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: Mon, 14 Nov 2022 14:30:40 +0900
Subject: [PATCH] fix(es/modules): Fix `jsc.paths` of `.ts` imports (#6431)

**Related issue:**

 - Closes https://github.com/swc-project/swc/issues/6432.
---
 crates/swc_ecma_transforms_module/src/path.rs | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/crates/swc_ecma_transforms_module/src/path.rs b/crates/swc_ecma_transforms_module/src/path.rs
index f987931f8a12..f4edf5b39326 100644
--- a/crates/swc_ecma_transforms_module/src/path.rs
+++ b/crates/swc_ecma_transforms_module/src/path.rs
@@ -113,12 +113,24 @@ where
 {
     fn resolve_import(&self, base: &FileName, module_specifier: &str) -> Result<JsWord, Error> {
         fn to_specifier(target_path: &str, orig_ext: Option<&str>) -> JsWord {
-            let p = PathBuf::from(target_path);
+            let mut p = PathBuf::from(target_path);
 
             if cfg!(debug_assertions) {
                 trace!("to_specifier: orig_ext={:?}", orig_ext);
             }
 
+            if let Some(orig_ext) = orig_ext {
+                let use_orig = if let Some(ext) = p.extension() {
+                    (ext == "ts" || ext == "tsx") && p.is_file()
+                } else {
+                    false
+                };
+
+                if use_orig {
+                    p.set_extension(orig_ext);
+                }
+            }
+
             p.display().to_string().into()
         }