feat: ESM first (#493)

* feat: ESM first

* chore: remove CJS

* chore: remove pwa plugin d.cts

package.json

@@ -1,5 +1,6 @@
 {
   "name": "vite-plugin-pwa",
+  "type": "module",
   "version": "0.14.7",
   "packageManager": "pnpm@7.18.1",
   "description": "Zero-config PWA for Vite",
@@ -25,11 +26,12 @@
     "vite",
     "vite-plugin"
   ],
+  "sideEffects": false,
   "exports": {
     ".": {
       "types": "./dist/index.d.ts",
-      "import": "./dist/index.mjs",
-      "require": "./dist/index.js"
+      "require": "./dist/index.cjs",
+      "import": "./dist/index.js"
     },
     "./types": {
       "types": "./types/index.d.ts"
@@ -61,12 +63,12 @@
     "./*": "./*"
   },
   "main": "dist/index.js",
-  "module": "dist/index.mjs",
-  "types": "index.d.ts",
+  "module": "dist/index.js",
+  "types": "dist/index.d.ts",
   "files": [
     "dist",
-    "*.d.ts",
-    "types"
+    "types",
+    "*.d.ts"
   ],
   "scripts": {
     "docs": "npm -C docs run dev",

src/modules.ts

@@ -42,7 +42,7 @@ export async function generateRegisterSW(options: ResolvedVitePWAOptions, mode:
   const sw = options.buildBase + options.filename
   const scope = options.scope
 
-  const content = await fs.readFile(resolve(_dirname, `client/${mode}/${source}.mjs`), 'utf-8')
+  const content = await fs.readFile(resolve(_dirname, `client/${mode}/${source}.js`), 'utf-8')
 
   return content
     .replace(/__SW__/g, sw)

types/package.json

@@ -1,3 +1,3 @@
 {
-  "//": "this file is here to make typescript happy when moduleResolution=node16+"
+  "type": "module"
 }