Rewrite build steps and update output

- Updated all "build:x" scripts based on React-Redux package
- Added tsconfig and TS types output, and moved TS output to ./es
- Added Babel compilation of TS syntax

.babelrc.js

@@ -1,8 +1,19 @@
-const { BABEL_ENV, NODE_ENV } = process.env
-const cjs = BABEL_ENV === 'cjs' || NODE_ENV === 'test'
+const { NODE_ENV, BABEL_ENV } = process.env
+const cjs = NODE_ENV === 'test' || BABEL_ENV === 'commonjs'
 
 module.exports = {
   presets: [
-    ['@babel/env', { loose: true, modules: cjs ? 'cjs' : false }]
+    [
+      '@babel/preset-env',
+      {
+        targets: {
+          ie: 11
+        },
+        loose: true,
+        modules: cjs ? 'cjs' : false
+      }
+    ],
+    '@babel/preset-typescript'
   ],
+  plugins: [cjs && ['@babel/transform-modules-commonjs']].filter(Boolean)
 }

.eslintignore

@@ -0,0 +1,4 @@
+lib
+es
+dist
+node_modules

.gitignore

@@ -11,3 +11,4 @@ typescript_test/should_not_compile/index.js
 typescript_test/common.js
 flow_test/should_fail/flow-typed/index.js.flow
 flow_test/should_pass/flow-typed/index.js.flow
+reselect-builds/

package.json

@@ -2,10 +2,11 @@
   "name": "reselect",
   "version": "4.1.0-alpha.0",
   "description": "Selectors for Redux.",
-  "main": "lib/index.js",
-  "jsnext:main": "es/index.js",
-  "module": "es/index.js",
-  "typings": "lib/index.d.ts",
+  "main": "./lib/index.js",
+  "jsnext:main": "./es/index.js",
+  "module": "./es/index.js",
+  "types": "./es/index.d.ts",
+  "unpkg": "./dist/reselect.js",
   "typesVersions": {
     "<4.2.0": {
       "*": [
@@ -23,13 +24,17 @@
     "url": "https://github.com/reduxjs/reselect/issues"
   },
   "scripts": {
-    "compile:commonjs": "better-npm-run compile:commonjs",
-    "compile:umdmin": "uglifyjs dist/reselect.js -mt -o dist/reselect.min.js",
-    "compile:umd": "rollup -c",
-    "compile:es": "babel -d es/ src/",
-    "compile": "npm run compile:commonjs && npm run compile:umd && npm run compile:umdmin && npm run compile:es",
+    "build:commonjs": "cross-env BABEL_ENV=commonjs babel src/index.ts --extensions .ts --out-dir lib ",
+    "build:es": "babel src/index.ts --extensions .ts --out-dir es",
+    "build:umd": "cross-env NODE_ENV=development rollup -c -o dist/reselect.js",
+    "build:umd:min": "cross-env NODE_ENV=production rollup -c -o dist/reselect.min.js",
+    "build:types": "tsc",
+    "build": "rimraf dist lib es && npm run build:types && npm run build:commonjs && npm run build:es && npm run build:umd && npm run build:umd:min",
+    "clean": "rimraf lib dist es coverage",
+    "api-types": "api-extractor run --local",
+    "format": "prettier --write \"{src,test}/**/*.{js,ts}\" \"docs/**/*.md\"",
     "lint": "eslint src test",
-    "prepublish": "npm run compile",
+    "prepare": "npm run build",
     "test": "better-npm-run test",
     "test:cov": "better-npm-run test:cov",
     "test:typescript": "better-npm-run test:typescript"
@@ -52,7 +57,7 @@
       "command": "tsc --noEmit -p typescript_test/tsconfig.json"
     },
     "compile:commonjs": {
-      "command": "babel -d lib/ src/ && ncp ./src/index.d.ts ./lib/index.d.ts",
+      "command": "babel -d lib/ src/",
       "env": {
         "BABEL_ENV": "cjs"
       }

rollup.config.js

@@ -1,15 +1,48 @@
+import nodeResolve from '@rollup/plugin-node-resolve'
 import babel from '@rollup/plugin-babel'
+import replace from '@rollup/plugin-replace'
+import commonjs from '@rollup/plugin-commonjs'
+import { terser } from 'rollup-plugin-terser'
 
-export default {
-  input: 'src/index.js',
+const env = process.env.NODE_ENV
+
+const extensions = ['.js', '.ts', '.tsx', '.json']
+
+const config = {
+  input: 'src/index.ts',
   output: {
-    file: 'dist/reselect.js',
     format: 'umd',
     name: 'Reselect'
   },
   plugins: [
+    nodeResolve({
+      extensions
+    }),
     babel({
-      babelHelpers: 'bundled'
-    })
+      include: 'src/**/*',
+      exclude: '**/node_modules/**',
+      babelHelpers: 'bundled',
+      extensions
+    }),
+    replace({
+      'process.env.NODE_ENV': JSON.stringify(env),
+      preventAssignment: true
+    }),
+    commonjs()
   ]
 }
+
+if (env === 'production') {
+  config.plugins.push(
+    terser({
+      compress: {
+        pure_getters: true,
+        unsafe: true,
+        unsafe_comps: true,
+        warnings: false
+      }
+    })
+  )
+}
+
+export default config

src/index.ts

@@ -1,4 +1,4 @@
-import {
+import type {
   Selector,
   GetParamsFromSelectors,
   OutputSelector,
@@ -7,7 +7,15 @@ import {
   SelectorResultArray
 } from './types'
 
-export * from './types'
+export type {
+  Selector,
+  GetParamsFromSelectors,
+  OutputSelector,
+  EqualityFn,
+  SelectorArray,
+  SelectorResultArray,
+  ParametricSelector
+} from './types'
 
 export const defaultEqualityCheck: EqualityFn = (a, b) => {
   return a === b

tsconfig.json

@@ -0,0 +1,21 @@
+{
+  "compilerOptions": {
+    "strict": true,
+    "target": "ESNext",
+    "module": "ESNext",
+    "moduleResolution": "Node",
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "allowJs": true,
+    "jsx": "react",
+    "declaration": true,
+    "emitDeclarationOnly": true,
+    "outDir": "./es",
+    "forceConsistentCasingInFileNames": true,
+    "experimentalDecorators": true,
+    "rootDirs": ["./src", "./test"],
+    "rootDir": "./src",
+  },
+  "include": ["src/**/*", "typescript-test/**/*"],
+  "exclude": ["node_modules", "dist"]
+}