From 880c4f4c651b3a4fbd3ce58c8cdad5f2890614d8 Mon Sep 17 00:00:00 2001
From: Anton Golub <antongolub@antongolub.com>
Date: Fri, 8 Nov 2024 16:33:26 +0300
Subject: [PATCH] refactor: relax ext normalize (#937)

---
 src/cli.ts       | 4 +---
 test/cli.test.js | 2 +-
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/cli.ts b/src/cli.ts
index be53189a90..6e3ae5cc91 100644
--- a/src/cli.ts
+++ b/src/cli.ts
@@ -305,7 +305,5 @@ export function isMain(
 }
 
 export function normalizeExt(ext?: string) {
-  if (!ext) return
-  if (!/^\.?\w+(\.\w+)*$/.test(ext)) throw new Error(`Invalid extension ${ext}`)
-  return ext[0] === '.' ? ext : `.${ext}`
+  return ext ? path.parse(`foo.${ext}`).ext : ext
 }
diff --git a/test/cli.test.js b/test/cli.test.js
index 27201dbf67..98b3f08aec 100644
--- a/test/cli.test.js
+++ b/test/cli.test.js
@@ -271,7 +271,7 @@ describe('cli', () => {
   test('normalizeExt()', () => {
     assert.equal(normalizeExt('.ts'), '.ts')
     assert.equal(normalizeExt('ts'), '.ts')
+    assert.equal(normalizeExt('.'), '.')
     assert.equal(normalizeExt(), undefined)
-    assert.throws(() => normalizeExt('.'))
   })
 })