fix(types): only strip extensions that ts retries

Author: danielroe

src/core/build/types.ts

@@ -294,9 +294,7 @@ declare module "nitropack/types" {
             .catch(() => null /* file does not exist */);
           return relativeWithDot(
             tsconfigDir,
-            stats?.isFile()
-              ? path.replace(/(?<=\w)\.\w+$/g, "") /* remove extension */
-              : path
+            stats?.isFile() ? stripPathsExt(path) : path
           );
         })
       );
@@ -346,3 +344,11 @@ export function relativeWithDot(from: string, to: string) {
   const rel = relative(from, to);
   return RELATIVE_RE.test(rel) ? rel : "./" + rel;
 }
+
+// Strip only the extensions TS retries from a bare `paths` candidate.
+// https://github.com/microsoft/TypeScript/blob/main/src/compiler/moduleNameResolver.ts
+const PATHS_STRIPPABLE_EXT_RE = /\.(?:tsx?|jsx?|[cm]js)$/;
+
+export function stripPathsExt(path: string) {
+  return path.replace(PATHS_STRIPPABLE_EXT_RE, "");
+}