fix(babel): prepare for Rollup 3

BREAKING CHANGES: Requires Node 14

packages/babel/README.md

@@ -26,7 +26,7 @@ Using Rollup with `@rollup/plugin-babel` makes the process far easier.
 
 ## Requirements
 
-This plugin requires an [LTS](https://github.com/nodejs/Release) Node version (v10.0.0+) and Rollup v1.20.0+.
+This plugin requires an [LTS](https://github.com/nodejs/Release) Node version (v14.0.0+) and Rollup v1.20.0+.
 
 ## Install
 
@@ -45,7 +45,7 @@ const config = {
   input: 'src/index.js',
   output: {
     dir: 'output',
-    format: 'esm'
+    format: 'es'
   },
   plugins: [babel({ babelHelpers: 'bundled' })]
 };
@@ -174,7 +174,7 @@ export default {
   ],
   output: [
     { file: 'bundle.cjs.js', format: 'cjs' },
-    { file: 'bundle.esm.js', format: 'esm' }
+    { file: 'bundle.esm.js', format: 'es' }
   ]
 };
 ```
@@ -188,10 +188,10 @@ import { getBabelOutputPlugin } from '@rollup/plugin-babel';
 export default {
   input: 'main.js',
   output: [
-    { file: 'bundle.js', format: 'esm' },
+    { file: 'bundle.js', format: 'es' },
     {
       file: 'bundle.es5.js',
-      format: 'esm',
+      format: 'es',
       plugins: [getBabelOutputPlugin({ presets: ['@babel/preset-env'] })]
     }
   ]
@@ -212,7 +212,7 @@ export default {
   output: [
     {
       file: 'bundle.js',
-      format: 'esm',
+      format: 'es',
       plugins: [getBabelOutputPlugin({ presets: ['@babel/preset-env'] })]
     }
   ]
@@ -261,7 +261,7 @@ Note that this will only work for `esm` and `cjs` formats, and you need to make
 ```js
 rollup.rollup({...})
 .then(bundle => bundle.generate({
-  format: 'esm',
+  format: 'es',
   plugins: [getBabelOutputPlugin({
     presets: ['@babel/preset-env'],
     plugins: [['@babel/plugin-transform-runtime', { useESModules: true }]]

packages/babel/package.json

@@ -13,10 +13,14 @@
   "author": "Rich Harris",
   "homepage": "https://github.com/rollup/plugins/tree/master/packages/babel#readme",
   "bugs": "https://github.com/rollup/plugins/issues",
-  "main": "dist/index.js",
-  "module": "dist/index.es.js",
+  "main": "./dist/cjs/index.js",
+  "module": "./dist/es/index.js",
+  "exports": {
+    "require": "./dist/cjs/index.js",
+    "import": "./dist/es/index.js"
+  },
   "engines": {
-    "node": ">= 10.0.0"
+    "node": ">=14.0.0"
   },
   "scripts": {
     "build": "rollup -c",
@@ -32,7 +36,7 @@
     "test:ts": "tsc types/index.d.ts test/types.ts --noEmit"
   },
   "files": [
-    "dist",
+    "dist/**/*.{js,json}",
     "types",
     "README.md",
     "LICENSE"
@@ -48,35 +52,35 @@
   "peerDependencies": {
     "@babel/core": "^7.0.0",
     "@types/babel__core": "^7.1.9",
-    "rollup": "^1.20.0||^2.0.0"
+    "rollup": "^1.20.0||^2.0.0||^3.0.0"
   },
   "peerDependenciesMeta": {
+    "rollup": {
+      "optional": true
+    },
     "@types/babel__core": {
       "optional": true
     }
   },
   "dependencies": {
-    "@babel/helper-module-imports": "^7.10.4",
-    "@rollup/pluginutils": "^3.1.0"
+    "@babel/helper-module-imports": "^7.18.6",
+    "@rollup/pluginutils": "^4.2.1"
   },
   "devDependencies": {
-    "@babel/core": "^7.10.5",
-    "@babel/plugin-external-helpers": "^7.10.4",
-    "@babel/plugin-proposal-decorators": "^7.10.5",
+    "@babel/core": "^7.19.1",
+    "@babel/plugin-external-helpers": "^7.18.6",
+    "@babel/plugin-proposal-decorators": "^7.19.1",
     "@babel/plugin-syntax-dynamic-import": "^7.8.3",
-    "@babel/plugin-transform-runtime": "^7.10.5",
-    "@babel/preset-env": "^7.10.4",
+    "@babel/plugin-transform-runtime": "^7.19.1",
+    "@babel/preset-env": "^7.19.1",
     "@rollup/plugin-json": "^4.1.0",
-    "@rollup/plugin-node-resolve": "^10.0.0",
+    "@rollup/plugin-node-resolve": "^14.1.0",
     "@types/babel__core": "^7.1.9",
-    "rollup": "^2.67.3",
-    "source-map": "^0.7.3"
+    "rollup": "^3.0.0-7",
+    "source-map": "^0.7.4"
   },
   "types": "types/index.d.ts",
   "ava": {
-    "babel": {
-      "compileEnhancements": false
-    },
     "files": [
       "!**/fixtures/**",
       "!**/helpers/**",

packages/babel/rollup.config.mjs

@@ -0,0 +1,18 @@
+import { readFileSync } from 'fs';
+
+import { createConfig } from '../../shared/rollup.config.mjs';
+
+import { babel } from './src/index.js';
+
+const pkg = JSON.parse(readFileSync(new URL('./package.json', import.meta.url), 'utf8'));
+
+export default {
+  ...createConfig({ pkg }),
+  input: './src/index.js',
+  plugins: [
+    babel({
+      presets: [['@babel/preset-env', { targets: { node: 8 } }]],
+      babelHelpers: 'bundled'
+    })
+  ]
+};

packages/babel/src/bundledHelpersPlugin.js

@@ -1,6 +1,6 @@
 import { addNamed } from '@babel/helper-module-imports';
 
-import { HELPERS } from './constants';
+import { HELPERS } from './constants.js';
 
 export default function importHelperPlugin({ types: t }) {
   return {

packages/babel/src/index.js

@@ -1,11 +1,11 @@
 import * as babel from '@babel/core';
 import { createFilter } from '@rollup/pluginutils';
 
-import { BUNDLED, HELPERS } from './constants';
-import bundledHelpersPlugin from './bundledHelpersPlugin';
-import preflightCheck from './preflightCheck';
-import transformCode from './transformCode';
-import { addBabelPlugin, escapeRegExpCharacters, warnOnce, stripQuery } from './utils';
+import { BUNDLED, HELPERS } from './constants.js';
+import bundledHelpersPlugin from './bundledHelpersPlugin.js';
+import preflightCheck from './preflightCheck.js';
+import transformCode from './transformCode.js';
+import { addBabelPlugin, escapeRegExpCharacters, warnOnce, stripQuery } from './utils.js';
 
 const unpackOptions = ({
   extensions = babel.DEFAULT_EXTENSIONS,

packages/babel/src/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}

packages/babel/src/preflightCheck.js

@@ -1,7 +1,7 @@
 import * as babel from '@babel/core';
 
-import { INLINE, RUNTIME, EXTERNAL, BUNDLED } from './constants';
-import { addBabelPlugin } from './utils';
+import { INLINE, RUNTIME, EXTERNAL, BUNDLED } from './constants.js';
+import { addBabelPlugin } from './utils.js';
 
 const MODULE_ERROR =
   'Rollup requires that your Babel configuration keeps ES6 module syntax intact. ' +