Migrate Redux package to be full ESM

- Added `type: "module"` and `exports` section
- Moved build output to `/dist`
- Updated Rollup to 3.x
- Changed CommonJS artifact to have `.cjs` extension to placate `publint`
- Renamed config files and `mangleErrors` script to `.cjs`

Author: markerikson

.babelrc.js renamed to .babelrc.cjs

@@ -18,7 +18,7 @@ jobs:
       - name: Set up Node
         uses: actions/setup-node@v3
         with:
-          node-version: 14.x
+          node-version: 16.x
           cache: 'npm'
 
       - name: Install dependencies

.eslintrc.js renamed to .eslintrc.cjs

@@ -23,15 +23,16 @@
     "Dan Abramov <[email protected]> (https://github.com/gaearon)",
     "Andrew Clark <[email protected]> (https://github.com/acdlite)"
   ],
-  "main": "lib/redux.js",
-  "module": "es/redux.js",
+  "type": "module",
+  "module": "dist/es/index.js",
+  "main": "dist/cjs/index.cjs",
   "types": "types/index.d.ts",
   "exports": {
     "./package.json": "./package.json",
     ".": {
       "types": "./types/index.d.ts",
-      "import": "./es/redux.js",
-      "default": "./lib/redux.js"
+      "import": "./dist/es/index.js",
+      "default": "./dist/cjs/index.cjs"
     }
   },
   "files": [

.github/workflows/test.yaml

@@ -3,28 +3,18 @@ import nodeResolve from '@rollup/plugin-node-resolve'
 import babel from '@rollup/plugin-babel'
 import replace from '@rollup/plugin-replace'
 import typescript from 'rollup-plugin-typescript2'
-import { terser } from 'rollup-plugin-terser'
-
-import pkg from './package.json'
+import terser from '@rollup/plugin-terser'
 
 const extensions = ['.ts']
 const noDeclarationFiles = { compilerOptions: { declaration: false } }
 
-const babelRuntimeVersion = pkg.dependencies['@babel/runtime'].replace(
-  /^[^0-9]*/,
-  ''
-)
-
-const external = [
-  ...Object.keys(pkg.dependencies || {}),
-  ...Object.keys(pkg.peerDependencies || {})
-].map(name => RegExp(`^${name}($|/)`))
+const external = []
 
 export default defineConfig([
   // CommonJS
   {
     input: 'src/index.ts',
-    output: { file: 'lib/redux.js', format: 'cjs', indent: false },
+    output: { file: 'dist/cjs/index.cjs', format: 'cjs', indent: false },
     external,
     plugins: [
       nodeResolve({
@@ -33,7 +23,7 @@ export default defineConfig([
       typescript({ useTsconfigDeclarationDir: true }),
       babel({
         extensions,
-        plugins: [['./scripts/mangleErrors.js', { minify: false }]],
+        plugins: [['./scripts/mangleErrors.cjs', { minify: false }]],
         babelHelpers: 'bundled'
       })
     ]
@@ -42,7 +32,7 @@ export default defineConfig([
   // ES
   {
     input: 'src/index.ts',
-    output: { file: 'es/redux.js', format: 'es', indent: false },
+    output: { file: 'dist/es/index.js', format: 'es', indent: false },
     external,
     plugins: [
       nodeResolve({
@@ -51,7 +41,7 @@ export default defineConfig([
       typescript({ tsconfigOverride: noDeclarationFiles }),
       babel({
         extensions,
-        plugins: [['./scripts/mangleErrors.js', { minify: false }]],
+        plugins: [['./scripts/mangleErrors.cjs', { minify: false }]],
         babelHelpers: 'bundled'
       })
     ]
@@ -60,7 +50,7 @@ export default defineConfig([
   // ES for Browsers
   {
     input: 'src/index.ts',
-    output: { file: 'es/redux.mjs', format: 'es', indent: false },
+    output: { file: 'dist/es/redux.mjs', format: 'es', indent: false },
     plugins: [
       nodeResolve({
         extensions
@@ -73,7 +63,7 @@ export default defineConfig([
       babel({
         extensions,
         exclude: 'node_modules/**',
-        plugins: [['./scripts/mangleErrors.js', { minify: true }]],
+        plugins: [['./scripts/mangleErrors.cjs', { minify: true }]],
         skipPreflightCheck: true,
         babelHelpers: 'bundled'
       }),

jest.config.js renamed to jest.config.cjs

@@ -71,10 +71,10 @@ module.exports = babel => {
     },
     visitor: {
       ThrowStatement(path, file) {
-        const arguments = path.node.argument.arguments
+        const args = path.node.argument.arguments
         const minify = file.opts.minify
 
-        if (arguments && arguments[0]) {
+        if (args && args[0]) {
           // Skip running this logic when certain types come up:
           //  Identifier comes up when a variable is thrown (E.g. throw new error(message))
           //  NumericLiteral, CallExpression, and ConditionalExpression is code we have already processed
@@ -103,11 +103,12 @@ module.exports = babel => {
           }
 
           // Import the error message function
-          const formatProdErrorMessageIdentifier = helperModuleImports.addDefault(
-            path,
-            'src/utils/formatProdErrorMessage',
-            { nameHint: 'formatProdErrorMessage' }
-          )
+          const formatProdErrorMessageIdentifier =
+            helperModuleImports.addDefault(
+              path,
+              'src/utils/formatProdErrorMessage',
+              { nameHint: 'formatProdErrorMessage' }
+            )
 
           // Creates a function call to output the message to the error code page on the website
           const prodMessage = t.callExpression(