Upgrade babel and reduce bundles size

.size-snapshot.json

@@ -1,25 +1,25 @@
 {
   "lib/packages/recompose/dist/Recompose.umd.js": {
-    "bundled": 85724,
-    "minified": 31665,
-    "gzipped": 10051
+    "bundled": 46995,
+    "minified": 16584,
+    "gzipped": 4651
   },
   "lib/packages/recompose/dist/Recompose.min.js": {
-    "bundled": 82164,
-    "minified": 30382,
-    "gzipped": 9658
+    "bundled": 43433,
+    "minified": 15304,
+    "gzipped": 4220
   },
   "lib/packages/recompose/dist/Recompose.esm.js": {
-    "bundled": 32374,
-    "minified": 16118,
-    "gzipped": 3577,
+    "bundled": 31344,
+    "minified": 14863,
+    "gzipped": 3459,
     "treeshaked": {
       "rollup": {
-        "code": 601,
-        "import_statements": 472
+        "code": 364,
+        "import_statements": 364
       },
       "webpack": {
-        "code": 2248
+        "code": 1893
       }
     }
   }

babel.config.js

@@ -0,0 +1,11 @@
+module.exports = {
+  plugins: [['@babel/proposal-class-properties', { loose: true }]],
+  presets: [['@babel/env', { loose: true, modules: false }], '@babel/react'],
+}
+
+if (process.env.NODE_ENV === 'cjs' || process.env.NODE_ENV === 'test') {
+  module.exports.plugins.push(
+    '@babel/transform-runtime',
+    '@babel/transform-modules-commonjs'
+  )
+}

package.json

@@ -36,16 +36,17 @@
     ]
   },
   "devDependencies": {
-    "babel-cli": "^6.24.1",
-    "babel-core": "^6.5.2",
+    "@babel/cli": "^7.0.0-beta.55",
+    "@babel/core": "^7.0.0-beta.55",
+    "@babel/plugin-proposal-class-properties": "^7.0.0-beta.55",
+    "@babel/plugin-transform-modules-commonjs": "^7.0.0-beta.55",
+    "@babel/plugin-transform-runtime": "^7.0.0-beta.55",
+    "@babel/preset-env": "^7.0.0-beta.55",
+    "@babel/preset-react": "^7.0.0-beta.55",
+    "@babel/runtime": "^7.0.0-beta.55",
+    "babel-core": "^7.0.0-bridge.0",
     "babel-eslint": "^6.0.4",
     "babel-jest": "^22.4.3",
-    "babel-plugin-external-helpers": "^6.22.0",
-    "babel-plugin-transform-class-properties": "^6.8.0",
-    "babel-plugin-transform-object-rest-spread": "^6.8.0",
-    "babel-plugin-transform-runtime": "^6.23.0",
-    "babel-preset-env": "^1.6.1",
-    "babel-preset-react": "^6.24.1",
     "baconjs": "^0.7.84",
     "chalk": "^1.1.1",
     "change-case": "^2.3.1",
@@ -73,7 +74,7 @@
     "react-dom": "^16.3.1",
     "readline-sync": "^1.2.21",
     "rollup": "^0.62.0",
-    "rollup-plugin-babel": "^3.0.7",
+    "rollup-plugin-babel": "^4.0.0-beta.7",
     "rollup-plugin-commonjs": "^9.1.3",
     "rollup-plugin-node-resolve": "^3.3.0",
     "rollup-plugin-replace": "^2.0.0",

scripts/rollup.config.js

@@ -17,11 +17,13 @@ const input = `./${path.join(PACKAGES_SRC_DIR, packageName, 'index.js')}`
 
 const outDir = path.join(PACKAGES_OUT_DIR, packageName, 'dist')
 
-const isExternal = id => !id.startsWith('.') && !id.startsWith('/')
+const isExternal = id =>
+  !id.startsWith('\0') && !id.startsWith('.') && !id.startsWith('/')
 
-const getBabelOptions = () => ({
+const getBabelOptions = ({ useESModules }) => ({
   exclude: '**/node_modules/**',
   runtimeHelpers: true,
+  plugins: [['@babel/transform-runtime', { useESModules, useBuiltIns: true }]],
 })
 
 const matchSnapshot = process.env.SNAPSHOT === 'match'
@@ -40,7 +42,7 @@ export default [
     external: ['react'],
     plugins: [
       nodeResolve(),
-      babel(getBabelOptions()),
+      babel(getBabelOptions({ useESModules: true })),
       commonjs(),
       replace({ 'process.env.NODE_ENV': JSON.stringify('development') }),
       sizeSnapshot({ matchSnapshot }),
@@ -60,7 +62,7 @@ export default [
     external: ['react'],
     plugins: [
       nodeResolve(),
-      babel(getBabelOptions()),
+      babel(getBabelOptions({ useESModules: true })),
       commonjs(),
       replace({ 'process.env.NODE_ENV': JSON.stringify('production') }),
       sizeSnapshot({ matchSnapshot }),
@@ -75,7 +77,7 @@ export default [
       format: 'cjs',
     },
     external: isExternal,
-    plugins: [babel(getBabelOptions())],
+    plugins: [babel(getBabelOptions({ useESModules: false }))],
   },
 
   {
@@ -85,6 +87,9 @@ export default [
       format: 'es',
     },
     external: isExternal,
-    plugins: [babel(getBabelOptions()), sizeSnapshot({ matchSnapshot })],
+    plugins: [
+      babel(getBabelOptions({ useESModules: true })),
+      sizeSnapshot({ matchSnapshot }),
+    ],
   },
 ]

src/packages/recompose/package.json

@@ -12,7 +12,7 @@
   "main": "dist/Recompose.cjs.js",
   "module": "dist/Recompose.esm.js",
   "dependencies": {
-    "babel-runtime": "^6.26.0",
+    "@babel/runtime": "^7.0.0-beta.55",
     "change-emitter": "^0.1.2",
     "fbjs": "^0.8.1",
     "hoist-non-react-statics": "^2.3.1",

src/packages/recompose/yarn.lock

@@ -2,17 +2,17 @@
 # yarn lockfile v1
 
 
+"@babel/runtime@^7.0.0-beta.55":
+  version "7.0.0-beta.55"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.0.0-beta.55.tgz#0bc33aa5a6ac0b012f37e25b9e6aaa2e489a916b"
+  dependencies:
+    core-js "^2.5.7"
+    regenerator-runtime "^0.12.0"
+
 asap@~2.0.3:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.5.tgz#522765b50c3510490e52d7dcfe085ef9ba96958f"
 
-babel-runtime@^6.26.0:
-  version "6.26.0"
-  resolved "https://registry.yarnpkg.com/babel-runtime/-/babel-runtime-6.26.0.tgz#965c7058668e82b55d7bfe04ff2337bc8b5647fe"
-  dependencies:
-    core-js "^2.4.0"
-    regenerator-runtime "^0.11.0"
-
 change-emitter@^0.1.2:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/change-emitter/-/change-emitter-0.1.6.tgz#e8b2fe3d7f1ab7d69a32199aff91ea6931409515"
@@ -21,9 +21,9 @@ core-js@^1.0.0:
   version "1.2.7"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
 
-core-js@^2.4.0:
-  version "2.5.5"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.5.5.tgz#b14dde936c640c0579a6b50cabcc132dd6127e3b"
+core-js@^2.5.7:
+  version "2.5.7"
+  resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.5.7.tgz#f972608ff0cead68b841a16a932d0b183791814e"
 
 encoding@^0.1.11:
   version "0.1.12"
@@ -93,9 +93,9 @@ react-lifecycles-compat@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/react-lifecycles-compat/-/react-lifecycles-compat-3.0.2.tgz#7279047275bd727a912e25f734c0559527e84eff"
 
-regenerator-runtime@^0.11.0:
-  version "0.11.1"
-  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.11.1.tgz#be05ad7f9bf7d22e056f9726cee5017fbf19e2e9"
+regenerator-runtime@^0.12.0:
+  version "0.12.0"
+  resolved "https://registry.yarnpkg.com/regenerator-runtime/-/regenerator-runtime-0.12.0.tgz#8052ac952d85b10f3425192cd0c53f45cf65c6cb"
 
 setimmediate@^1.0.5:
   version "1.0.5"