build: add cjs

Author: hyoban

package.json

@@ -15,14 +15,19 @@
   "exports": {
     ".": {
       "types": "./dist/index.d.mts",
+      "main": "./dist/index.cjs",
       "import": "./dist/index.mjs"
     },
     "./iconify": {
       "types": "./dist/iconify.d.mts",
+      "main": "./dist/iconify.cjs",
       "import": "./dist/iconify.mjs"
     },
     "./package.json": "./package.json"
   },
+  "main": "./dist/index.cjs",
+  "module": "./dist/index.mjs",
+  "types": "./dist/index.d.mts",
   "files": [
     "dist"
   ],

tsdown.config.ts

@@ -3,6 +3,7 @@ import { defineConfig } from 'tsdown'
 export default defineConfig({
   entry: ['src/index.ts', 'src/iconify.ts'],
   dts: true,
+  format: ['cjs', 'esm'],
   publint: true,
   // attw: {
   //   profile: 'node16',