Fix build script

Author: fisker

.github/workflows/ci.yml

@@ -49,3 +49,4 @@ jobs:
           disable_search: true
           files: coverage/lcov.info
           token: ${{ secrets.CODECOV_TOKEN }}
+      - run: yarn run build

package.json

@@ -12,8 +12,8 @@
   },
   "exports": {
     ".": {
-      "types": "./dist/index.d.mts",
-      "default": "./dist/index.mjs"
+      "types": "./dist/index.d.ts",
+      "default": "./dist/index.js"
     }
   },
   "license": "MIT",

tsdown.config.ts

@@ -0,0 +1,6 @@
+import { defineConfig } from 'tsdown';
+
+export default defineConfig({
+  external: ['@babel/types'],
+  fixedExtension: false,
+});