fix(buble): prepare for Rollup 3 (#1305)

BREAKING CHANGES: Requires Node 14

Author: lukastaegert

packages/buble/README.md

@@ -13,7 +13,7 @@
 
 ## Requirements
 
-This plugin requires an [LTS](https://github.com/nodejs/Release) Node version (v8.0.0+) 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
 

packages/buble/package.json

@@ -13,10 +13,15 @@
   "author": "Rich Harris <[email protected]>",
   "homepage": "https://github.com/rollup/plugins/tree/master/packages/buble/#readme",
   "bugs": "https://github.com/rollup/plugins/issues",
-  "main": "dist/rollup-plugin-buble.cjs.js",
-  "module": "dist/rollup-plugin-buble.es.js",
+  "main": "./dist/cjs/index.js",
+  "module": "./dist/es/index.js",
+  "exports": {
+    "import": "./dist/es/index.js",
+    "types": "./types/index.d.ts",
+    "default": "./dist/cjs/index.js"
+  },
   "engines": {
-    "node": ">= 8.0.0"
+    "node": ">=14.0.0"
   },
   "scripts": {
     "build": "rollup -c",
@@ -34,6 +39,7 @@
   },
   "files": [
     "dist",
+    "!dist/**/*.map",
     "types",
     "README.md",
     "LICENSE"
@@ -47,21 +53,26 @@
     "modules"
   ],
   "peerDependencies": {
-    "rollup": "^1.20.0||^2.0.0"
+    "rollup": "^1.20.0||^2.0.0||^3.0.0"
+  },
+  "peerDependenciesMeta": {
+    "rollup": {
+      "optional": true
+    }
   },
   "dependencies": {
-    "@rollup/pluginutils": "^3.1.0",
+    "@rollup/pluginutils": "^4.2.1",
     "@types/buble": "^0.19.2",
     "buble": "^0.20.0"
   },
   "devDependencies": {
-    "@rollup/plugin-typescript": "^5.0.2",
-    "del-cli": "^3.0.1",
-    "rollup": "^2.67.3",
-    "source-map": "^0.7.3",
-    "typescript": "4.1.2"
+    "@rollup/plugin-typescript": "^8.5.0",
+    "del-cli": "^5.0.0",
+    "rollup": "^3.0.0-7",
+    "source-map": "^0.7.4",
+    "typescript": "^4.8.3"
   },
-  "types": "types/index.d.ts",
+  "types": "./types/index.d.ts",
   "ava": {
     "workerThreads": false,
     "files": [

packages/buble/rollup.config.js

@@ -0,0 +1,7 @@
+import { readFileSync } from 'fs';
+
+import { createConfig } from '../../shared/rollup.config.mjs';
+
+export default createConfig({
+  pkg: JSON.parse(readFileSync(new URL('./package.json', import.meta.url), 'utf8'))
+});

packages/buble/rollup.config.mjs

@@ -2,7 +2,7 @@ import { transform } from 'buble';
 import { Plugin } from 'rollup';
 import { createFilter } from '@rollup/pluginutils';
 
-import { RollupBubleOptions } from '../types';
+import type { RollupBubleOptions } from '../types';
 
 export default function buble(options: RollupBubleOptions = {}): Plugin {
   const filter = createFilter(options.include, options.exclude);

packages/buble/src/index.ts

@@ -17,19 +17,17 @@ const getChunksFromGenerated = (generated) => {
 function getChunksFromBundle(bundle) {
   return bundle
     .generate({
-      format: 'esm'
+      format: 'es'
     })
     .then(getChunksFromGenerated);
 }
 
-test('transforms files', async (t) =>
-  rollup
-    .rollup({
-      input: 'fixtures/basic/main.js',
-      plugins: [buble()]
-    })
-    .then(getChunksFromBundle)
-    .then((generated) => {
-      t.is(generated.length, 1);
-      t.is(generated[0].code, 'function main () { return 42; }\n\nexport { main as default };\n');
-    }));
+test('transforms files', async (t) => {
+  const bundle = await rollup.rollup({
+    input: `${__dirname}/fixtures/basic/main.js`,
+    plugins: [buble()]
+  });
+  const generated = await getChunksFromBundle(bundle);
+  t.is(generated.length, 1);
+  t.is(generated[0].code, 'function main () { return 42; }\n\nexport { main as default };\n');
+});