Simplify the Rollup build to one command.

Author: timdorr

CONTRIBUTING.md

@@ -47,30 +47,6 @@ Running the `build` task will create a CommonJS module-per-module build, a ES Mo
 npm run build
 ```
 
-To create just a CommonJS module-per-module build:
-
-```
-npm run build:commonjs
-```
-
-The result will be in the `lib` folder.
-
-To create just a ES Modules build:
-
-```
-npm run build:es
-```
-
-The result will be in the `es` folder.
-
-To create just a UMD build:
-```
-npm run build:umd
-npm run build:umd:min
-```
-
-The result will be in the `dist` folder.
-
 ### Testing and Linting
 
 To only run linting:

package.json

@@ -39,15 +39,11 @@
     "format": "prettier --write \"{src,test}/**/*.{js,ts}\" index.d.ts",
     "format:check": "prettier --list-different \"{src,test}/**/*.{js,ts}\" index.d.ts",
     "lint": "eslint src test",
-    "pretest": "npm run build:commonjs",
+    "pretest": "npm run build",
     "test": "cross-env BABEL_ENV=commonjs jest",
     "test:watch": "npm test -- --watch",
     "test:cov": "npm test -- --coverage",
-    "build:commonjs": "cross-env NODE_ENV=cjs rollup -c -o lib/redux.js",
-    "build:es": "cross-env BABEL_ENV=es NODE_ENV=es rollup -c -o es/redux.js",
-    "build:umd": "cross-env BABEL_ENV=es NODE_ENV=development rollup -c -o dist/redux.js",
-    "build:umd:min": "cross-env BABEL_ENV=es NODE_ENV=production rollup -c -o dist/redux.min.js",
-    "build": "npm run build:commonjs && npm run build:es && npm run build:umd && npm run build:umd:min",
+    "build": "rollup -c",
     "prepare": "npm run clean && npm run format:check && npm run lint && npm test && npm run build",
     "examples:lint": "eslint examples",
     "examples:test": "cross-env CI=true babel-node examples/testAll.js"

rollup.config.js

@@ -3,49 +3,78 @@ import babel from 'rollup-plugin-babel'
 import replace from 'rollup-plugin-replace'
 import { terser } from 'rollup-plugin-terser'
 
-const env = process.env.NODE_ENV
-const config = {
-  input: 'src/index.js',
-  plugins: []
-}
-
-if (env === 'es' || env === 'cjs') {
-  config.output = { format: env, indent: false }
-  config.external = ['symbol-observable']
-  config.plugins.push(
-    babel({
-      plugins: ['external-helpers'],
-    })
-  )
-}
-
-if (env === 'development' || env === 'production') {
-  config.output = { format: 'umd', name: 'Redux', indent: false }
-  config.plugins.push(
-    nodeResolve({
-      jsnext: true
-    }),
-    babel({
-      exclude: 'node_modules/**',
-      plugins: ['external-helpers'],
-    }),
-    replace({
-      'process.env.NODE_ENV': JSON.stringify(env)
-    })
-  )
-}
-
-if (env === 'production') {
-  config.plugins.push(
-    terser({
-      compress: {
-        pure_getters: true,
-        unsafe: true,
-        unsafe_comps: true,
-        warnings: false
-      }
-    })
-  )
-}
-
-export default config
+export default [
+  {
+    input: 'src/index.js',
+    output: { file: 'lib/redux.js', format: 'cjs', indent: false },
+    external: ['symbol-observable'],
+    plugins: [
+      babel({
+        plugins: ['external-helpers']
+      })
+    ]
+  },
+  {
+    input: 'src/index.js',
+    output: { file: 'es/redux.js', format: 'es', indent: false },
+    external: ['symbol-observable'],
+    plugins: [
+      babel({
+        env: 'es',
+        plugins: ['external-helpers']
+      })
+    ]
+  },
+  {
+    input: 'src/index.js',
+    output: {
+      file: 'dist/redux.js',
+      format: 'umd',
+      name: 'Redux',
+      indent: false
+    },
+    plugins: [
+      nodeResolve({
+        jsnext: true
+      }),
+      babel({
+        env: 'es',
+        exclude: 'node_modules/**',
+        plugins: ['external-helpers']
+      }),
+      replace({
+        'process.env.NODE_ENV': JSON.stringify('development')
+      })
+    ]
+  },
+  {
+    input: 'src/index.js',
+    output: {
+      file: 'dist/redux.min.js',
+      format: 'umd',
+      name: 'Redux',
+      indent: false
+    },
+    plugins: [
+      nodeResolve({
+        jsnext: true
+      }),
+      babel({
+        env: 'es',
+        exclude: 'node_modules/**',
+        plugins: ['external-helpers']
+      }),
+      replace({
+        'process.env.NODE_ENV': JSON.stringify('production')
+      }),
+      terser({
+        compress: {
+          pure_getters: true,
+          unsafe: true,
+          unsafe_comps: true,
+          warnings: false
+        }
+      })
+    ]
+  }
+]