chore: add node version file

Author: sxzz

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Set node version to 16
         uses: actions/setup-node@v4
         with:
-          node-version: 16
+          node-version-file: '.node-version'
           cache: 'pnpm'
 
       - run: pnpm install

.node-version

@@ -0,0 +1 @@
+v16

package.json

@@ -12,7 +12,6 @@
   "types": "./dist/index.d.ts",
   "exports": {
     ".": {
-      "types": "./dist/index.d.ts",
       "import": "./dist/index.mjs",
       "require": "./dist/index.cjs"
     }