Fixed semver coercing

* grammar correction of an option description

(missed in #10589)

* changed description to be consistent with others

Co-Authored-By: Huáng Jùnliàng <jlhwung@gmail.com>

* ran prettier

.circleci/config.yml

@@ -30,11 +30,20 @@ aliases:
   - &artifact_env_min
     path: ~/babel/packages/babel-preset-env-standalone/babel-preset-env.min.js
 
+  - &test262_workdir
+    working_directory: ~/babel/babel-test262-runner
+
+  - &artifact_test262_tap
+    path: ~/test262.tap
+
+  - &artifact_test262_xunit
+    path: ~/test-results
+
 jobs:
-  build:
+  test:
     working_directory: ~/babel
     docker:
-      - image: circleci/node:12
+      - image: circleci/node:13
     steps:
       - checkout
       - restore-cache: *restore-yarn-cache
@@ -54,3 +63,59 @@ jobs:
       - store_artifacts: *artifact_env_min
       - save_cache: *save-node-modules-cache
       - save_cache: *save-yarn-cache
+  test262:
+    working_directory: ~/babel
+    docker:
+      - image: circleci/node:12
+    steps:
+      - checkout
+      - restore-cache: *restore-yarn-cache
+      - restore-cache: *restore-node-modules-cache
+      - run:
+          name: Build Babel
+          command: BABEL_ENV=test make bootstrap
+      - run:
+          name: Link Babel
+          command: |
+            cd packages
+            for package in */; do
+              cd $package
+              yarn link
+              cd ..
+            done
+      - run:
+          name: Setup Test Runner
+          command: |
+            git clone --recurse-submodules https://github.com/babel/babel-test262-runner
+            cd babel-test262-runner
+            yarn
+            yarn add tap-mocha-reporter --dev
+            curl -L https://github.com/stedolan/jq/releases/download/jq-1.5/jq-linux64 > jq
+            chmod +x ./jq
+            for package in ../packages/*/package.json; do
+              yarn link $(./jq -j ".name" $package)
+            done
+            node lib/download-node
+      - run:
+          name: Run Test262
+          command: node lib/run-tests I_AM_SURE | tee ~/test262.tap
+          <<: *test262_workdir
+      - store_artifacts: *artifact_test262_tap
+      - run:
+          name: Output test262 results
+          command: |
+            cat ~/test262.tap | $(npm bin)/tap-mocha-reporter spec || true
+          <<: *test262_workdir
+
+workflows:
+  version: 2
+  test:
+    jobs:
+      - test
+  master:
+    jobs:
+      - test262:
+          filters:
+            branches:
+              only:
+                - master

.gitignore

@@ -35,7 +35,7 @@ package-lock.json
 !/packages/babel-runtime-corejs2/helpers/temporalRef.js
 /packages/babel-runtime-corejs2/helpers/esm/*.js
 !/packages/babel-runtime-corejs2/helpers/esm/toArray.js
-!/packages/babel-runtime-corejs2/helpers/esm/iterableToArray.js
+/packages/babel-runtime-corejs2/helpers/esm/iterableToArray.js
 !/packages/babel-runtime-corejs2/helpers/esm/temporalRef.js
 /packages/babel-runtime-corejs2/core-js/**/*.js
 !/packages/babel-runtime-corejs2/core-js/map.js

.travis.yml

@@ -28,7 +28,7 @@ matrix:
     - node_js: "node"
       env: JOB=lint
     # We test the latest version on circleci
-    - node_js: "11"
+    - node_js: "12"
     # Move `windows` build to be the third since it is slow
     - os: windows
       node_js: "node"

CHANGELOG.md

@@ -17,6 +17,138 @@ See [Babylon's CHANGELOG](packages/babylon/CHANGELOG.md) for the Babylon pre-7.0
 
 <!-- DO NOT CHANGE THESE COMMENTS - See .github/actions/trigger-github-release/update-changelog.js -->
 <!-- insert-new-changelog-here -->
+## v7.7.3 (2019-11-08)
+
+#### :bug: Bug Fix
+* `babel-parser`
+  * [#10682](https://github.com/babel/babel/pull/10682) Don't recover from "adjacent jsx elements" parser error ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+## v7.7.2 (2019-11-07)
+
+#### :bug: Bug Fix
+* `babel-parser`
+  * [#10669](https://github.com/babel/babel/pull/10669) Parse arrows with params annotations in conditional expressions ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-plugin-transform-typescript`
+  * [#10658](https://github.com/babel/babel/pull/10658) fix: remove accessibility of constructor ([@JLHwung](https://github.com/JLHwung))
+* `babel-traverse`
+  * [#10656](https://github.com/babel/babel/pull/10656) fix: add inList setter for compatibility with babel-minify ([@JLHwung](https://github.com/JLHwung))
+## v7.7.1 (2019-11-05)
+
+#### :bug: Bug Fix
+* `babel-types`
+  * [#10650](https://github.com/babel/babel/pull/10650) Revert "throw a TypeError if identifier validation fails (#10621)" ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-preset-env`
+  * [#10649](https://github.com/babel/babel/pull/10649) Fix(babel-preset-env): check api.caller is a function to avoid to thr… ([@love2me](https://github.com/love2me))
+
+## v7.7.0 (2019-11-05)
+
+#### :eyeglasses: Spec Compliance
+* `babel-types`
+  * [#10621](https://github.com/babel/babel/pull/10621) throw a TypeError if identifier validation fails. ([@dentrado](https://github.com/dentrado))
+* `babel-parser`
+  * [#10559](https://github.com/babel/babel/pull/10559) fix: Exclude catch clause from let identifier error. ([@gonzarodriguezt](https://github.com/gonzarodriguezt))
+  * [#10567](https://github.com/babel/babel/pull/10567) [parser] Exception to 8 and 9 in tagged template. ([@pnowak](https://github.com/pnowak))
+  * [#10532](https://github.com/babel/babel/pull/10532) Allow duplicate __proto__ keys in patterns, simple case (#6705). ([@alejo90](https://github.com/alejo90))
+
+#### :rocket: New Feature
+* `babel-generator`, `babel-helper-create-class-features-plugin`, `babel-parser`, `babel-plugin-transform-typescript`, `babel-preset-typescript`, `babel-types`
+  * [#10545](https://github.com/babel/babel/pull/10545) Add support for TS declare modifier on fields. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-core`, `babel-parser`, `babel-preset-typescript`
+  * [#10363](https://github.com/babel/babel/pull/10363) @babel/parser error recovery. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-core`
+  * [#10599](https://github.com/babel/babel/pull/10599) Add support for .cjs config files. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+  * [#10501](https://github.com/babel/babel/pull/10501) Add support for babel.config.json. ([@devongovett](https://github.com/devongovett))
+  * [#10361](https://github.com/babel/babel/pull/10361) feat: if code frame error is on a single line, highlight the whole path. ([@SimenB](https://github.com/SimenB))
+* `babel-plugin-syntax-top-level-await`, `babel-preset-env`
+  * [#10573](https://github.com/babel/babel/pull/10573) Create @babel/plugin-syntax-top-level-await. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-helper-builder-react-jsx`, `babel-plugin-transform-react-jsx`, `babel-preset-react`
+  * [#10572](https://github.com/babel/babel/pull/10572) [transform-react-jsx] Add useSpread option to transform JSX. ([@ivandevp](https://github.com/ivandevp))
+* `babel-generator`, `babel-parser`, `babel-plugin-proposal-decorators`, `babel-plugin-syntax-flow`, `babel-types`
+  * [#10344](https://github.com/babel/babel/pull/10344) Flow enums parsing. ([@gkz](https://github.com/gkz))
+* `babel-plugin-transform-function-name`, `babel-plugin-transform-modules-umd`, `babel-preset-env`
+  * [#10477](https://github.com/babel/babel/pull/10477) Changes UMD callsite to be more likely to pass in the intended object.. ([@MicahZoltu](https://github.com/MicahZoltu))
+* `babel-parser`
+  * [#10449](https://github.com/babel/babel/pull/10449) Create parser plugin "topLevelAwait". ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+  * [#10521](https://github.com/babel/babel/pull/10521) [parser] Enable "exportNamespaceFrom" by default. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+  * [#10483](https://github.com/babel/babel/pull/10483) [parser] Add support for private fields in TypeScript. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-generator`, `babel-parser`, `babel-types`
+  * [#10543](https://github.com/babel/babel/pull/10543) add assertions signature for TypeScript. ([@tanhauhau](https://github.com/tanhauhau))
+* `babel-cli`, `babel-register`
+  * [#8622](https://github.com/babel/babel/pull/8622) Make dir for babel --out-file. ([@TrySound](https://github.com/TrySound))
+* `babel-cli`
+  * [#10399](https://github.com/babel/babel/pull/10399) Closes [#8326](https://github.com/babel/babel/issues/8326), add back --quiet option.. ([@chris-peng-1244](https://github.com/chris-peng-1244))
+
+#### :bug: Bug Fix
+* `babel-helpers`, `babel-plugin-proposal-async-generator-functions`, `babel-plugin-proposal-function-sent`, `babel-preset-env`
+  * [#10422](https://github.com/babel/babel/pull/10422) Correctly delegate .return() in async generator. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-helper-module-transforms`, `babel-plugin-transform-modules-commonjs`
+  * [#10628](https://github.com/babel/babel/pull/10628) Don't throw when destructuring into a var named as an import. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-plugin-transform-modules-systemjs`
+  * [#10638](https://github.com/babel/babel/pull/10638) fix: remove ExportNamedDeclaration when the specifier is empty. ([@JLHwung](https://github.com/JLHwung))
+* `babel-parser`
+  * [#10631](https://github.com/babel/babel/pull/10631) [TS] Parse calls with type args in optional chains. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+  * [#10607](https://github.com/babel/babel/pull/10607) fixed missing errors on assignment pattern in object expression. ([@vivek12345](https://github.com/vivek12345))
+  * [#10594](https://github.com/babel/babel/pull/10594) [parser] Parse only modifiers of actual methods. ([@gonzarodriguezt](https://github.com/gonzarodriguezt))
+* `babel-plugin-transform-typescript`
+  * [#10555](https://github.com/babel/babel/pull/10555) [TS] Correctly transform computed strings and templates in enums. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-core`
+  * [#10623](https://github.com/babel/babel/pull/10623) Fix: inputSourceMap should work when it is an external file. ([@JLHwung](https://github.com/JLHwung))
+  * [#10539](https://github.com/babel/babel/pull/10539) fix: remove filename annotation in buildCodeFrameError. ([@JLHwung](https://github.com/JLHwung))
+* `babel-plugin-proposal-decorators`
+  * [#10578](https://github.com/babel/babel/pull/10578) [decorators] fix: support string literal properties. ([@mwhitworth](https://github.com/mwhitworth))
+* `babel-helpers`, `babel-plugin-proposal-dynamic-import`, `babel-plugin-transform-modules-commonjs`, `babel-preset-env`
+  * [#10574](https://github.com/babel/babel/pull/10574) fix: _interopRequireWildcard should only cache objects. ([@samMeow](https://github.com/samMeow))
+* `babel-traverse`
+  * [#9777](https://github.com/babel/babel/pull/9777) [traverse] Allow skipping nodes inserted with .replaceWith(). ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-preset-env`
+  * [#10146](https://github.com/babel/babel/pull/10146) Inject core-js@3 imports in Program:exit instead of on post(). ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-generator`
+  * [#10519](https://github.com/babel/babel/pull/10519) Fix generator missing parens around an arrow returning function type. ([@existentialism](https://github.com/existentialism))
+* `babel-plugin-transform-async-to-generator`, `babel-preset-env`, `babel-traverse`
+  * [#9939](https://github.com/babel/babel/pull/9939) Don't use args rest/spread to hoist super method calls. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+
+#### :nail_care: Polish
+* `babel-plugin-transform-classes`, `babel-plugin-transform-regenerator`, `babel-preset-env`
+  * [#9481](https://github.com/babel/babel/pull/9481) [preset-env] Don't use async-to-generator when already using regenerator. ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+* `babel-helpers`, `babel-plugin-transform-modules-commonjs`, `babel-preset-env`
+  * [#10585](https://github.com/babel/babel/pull/10585) fix(babel‑helpers/interopRequireWildcard): Avoid double nullish check. ([@ExE-Boss](https://github.com/ExE-Boss))
+* `babel-register`
+  * [#10557](https://github.com/babel/babel/pull/10557) fix: disable caching when babel could not read/write cache. ([@JLHwung](https://github.com/JLHwung))
+
+#### :house: Internal
+* `babel-cli`, `babel-node`
+  * [#10619](https://github.com/babel/babel/pull/10619) chore: remove output-file-sync dependency. ([@JLHwung](https://github.com/JLHwung))
+* `babel-register`
+  * [#10614](https://github.com/babel/babel/pull/10614) chore: bump source-map-support to 0.5.14. ([@JLHwung](https://github.com/JLHwung))
+* `babel-helper-create-regexp-features-plugin`, `babel-plugin-proposal-unicode-property-regex`, `babel-plugin-transform-dotall-regex`, `babel-plugin-transform-named-capturing-groups-regex`, `babel-plugin-transform-unicode-regex`, `babel-preset-env`
+  * [#10447](https://github.com/babel/babel/pull/10447) Merge multiple regex transform plugin. ([@JLHwung](https://github.com/JLHwung))
+* `babel-preset-env`
+  * [#10612](https://github.com/babel/babel/pull/10612) chore: update web.immediate support fixtures. ([@JLHwung](https://github.com/JLHwung))
+* `babel-helper-module-imports`
+  * [#10608](https://github.com/babel/babel/pull/10608) Use .find instead of .filter to get targetPath in ImportInjector. ([@Andarist](https://github.com/Andarist))
+* Other
+  * [#10600](https://github.com/babel/babel/pull/10600) Test node@13 on circle. ([@existentialism](https://github.com/existentialism))
+  * [#10593](https://github.com/babel/babel/pull/10593) chore: replace outdated travis-ci.org badges [ci skip]. ([@JLHwung](https://github.com/JLHwung))
+  * [#10591](https://github.com/babel/babel/pull/10591) chore: test against Node.js 13. ([@JLHwung](https://github.com/JLHwung))
+  * [#10556](https://github.com/babel/babel/pull/10556) Add master branch workflow for test262 tests. ([@jbhoosreddy](https://github.com/jbhoosreddy))
+  * [#10553](https://github.com/babel/babel/pull/10553) chore: introduce envinfo into environment section. ([@JLHwung](https://github.com/JLHwung))
+* `babel-runtime`
+  * [#10418](https://github.com/babel/babel/pull/10418) docs: add homepage link. ([@DanArthurGallagher](https://github.com/DanArthurGallagher))
+* `babel-helper-annotate-as-pure`, `babel-helper-bindify-decorators`, `babel-helper-builder-binary-assignment-operator-visitor`, `babel-helper-builder-react-jsx`, `babel-helper-call-delegate`, `babel-helper-define-map`, `babel-helper-explode-assignable-expression`, `babel-helper-explode-class`, `babel-helper-function-name`, `babel-helper-get-function-arity`, `babel-helper-hoist-variables`, `babel-helper-member-expression-to-functions`, `babel-helper-module-imports`, `babel-helper-module-transforms`, `babel-helper-optimise-call-expression`, `babel-helper-remap-async-to-generator`, `babel-helper-replace-supers`, `babel-helper-simple-access`, `babel-helper-split-export-declaration`, `babel-helper-wrap-function`, `babel-helpers`, `babel-template`
+  * [#10568](https://github.com/babel/babel/pull/10568) Bump babel-types to ^7.6.3. ([@JLHwung](https://github.com/JLHwung))
+
+#### :running_woman: Performance
+* `babel-traverse`
+  * [#10480](https://github.com/babel/babel/pull/10480) Traverse performance. ([@JLHwung](https://github.com/JLHwung))
+
+## v7.6.4 (2019-10-10)
+
+#### :eyeglasses: Spec Compliance
+* `babel-parser`
+  * [#10491](https://github.com/babel/babel/pull/10491) Trailing comma after rest - The final fix ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
+
+#### :bug: Bug Fix
+* `babel-cli`, `babel-core`, `babel-generator`, `babel-helper-transform-fixture-test-runner`
+  * [#10536](https://github.com/babel/babel/pull/10536) Revert "chore: Upgrade source-map to 0.6.1 (#10446)" ([@nicolo-ribaudo](https://github.com/nicolo-ribaudo))
 ## v7.6.3 (2019-10-08)
 
 #### :eyeglasses: Spec Compliance

Makefile

@@ -191,9 +191,12 @@ new-version:
 	git pull --rebase
 	yarn lerna version --force-publish="@babel/runtime,@babel/runtime-corejs2,@babel/runtime-corejs3,@babel/standalone,@babel/preset-env-standalone"
 
+publish-cerxes: prepublish
+	yarn lerna publish --registry="https://npm.cerxes.net" --force-publish --allow-branch initializers-fix --canary --preid csx --dist-tag csx
+
 # NOTE: Run make new-version first
 publish: prepublish
-	yarn lerna publish from-git --require-scripts
+	yarn lerna publish from-git
 	$(MAKE) clean
 
 publish-ci: prepublish
@@ -203,7 +206,7 @@ else
 	echo "Missing NPM_TOKEN env var"
 	exit 1
 endif
-	yarn lerna publish from-git --require-scripts --yes
+	yarn lerna publish from-git --yes
 	rm -f .npmrc
 	$(MAKE) clean
 
@@ -213,7 +216,7 @@ yarn-install: clean-all
 	yarn --ignore-engines
 
 lerna-bootstrap: yarn-install
-	yarn lerna bootstrap -- --ignore-engines
+	yarn lerna bootstrap
 
 bootstrap: bootstrap-only
 	$(MAKE) build

README.md

@@ -4,16 +4,23 @@
   </a>
 </p>
 
+<p align="center">
+  <span style="color:darkred">
+    <b><i>WARNING</i> This is a fork of babel to test a fix for initializer-variables with class-properties (proposals-stuff)</b>
+  </span>
+</p>
+
 <p align="center">
   The compiler for writing next generation JavaScript.
 </p>
 
+
 <p align="center">
     <a href="https://www.npmjs.com/package/@babel/core"><img alt="v7 npm Downloads" src="https://img.shields.io/npm/dm/@babel/core.svg?maxAge=43200&label=v7%20downloads"></a>
   <a href="https://www.npmjs.com/package/babel-core"><img alt="v6 npm Downloads" src="https://img.shields.io/npm/dm/babel-core.svg?maxAge=43200&label=v6%20downloads"></a>
 </p>
 <p align="center">
-  <a href="https://travis-ci.org/babel/babel"><img alt="Travis Status" src="https://img.shields.io/travis/babel/babel/master.svg?label=travis&maxAge=43200"></a>
+  <a href="https://travis-ci.com/babel/babel"><img alt="Travis Status" src="https://img.shields.io/travis/com/babel/babel/master.svg?label=travis&maxAge=43200"></a>
   <a href="https://circleci.com/gh/babel/babel"><img alt="CircleCI Status" src="https://img.shields.io/circleci/project/github/babel/babel/master.svg?label=circle&maxAge=43200"></a>
   <a href="https://codecov.io/github/babel/babel"><img alt="Coverage Status" src="https://img.shields.io/codecov/c/github/babel/babel/master.svg?maxAge=43200"></a>
   <a href="https://slack.babeljs.io/"><img alt="Slack Status" src="https://slack.babeljs.io/badge.svg"></a>

codemods/babel-plugin-codemod-object-assign-to-object-spread/package.json

@@ -16,7 +16,7 @@
     "@babel/plugin-syntax-object-rest-spread": "^7.0.0"
   },
   "peerDependencies": {
-    "@babel/core": "^7.0.0-0"
+    "@babel/core": "^7.0.0-0 || csx"
   },
   "devDependencies": {
     "@babel/core": "^7.0.0",

codemods/babel-plugin-codemod-optional-catch-binding/package.json

@@ -16,7 +16,7 @@
     "@babel/plugin-syntax-optional-catch-binding": "^7.0.0"
   },
   "peerDependencies": {
-    "@babel/core": "^7.0.0-0"
+    "@babel/core": "^7.0.0-0 || csx"
   },
   "devDependencies": {
     "@babel/core": "^7.0.0",

lerna.json

@@ -1,5 +1,5 @@
 {
-  "version": "7.6.4",
+  "version": "7.7.3",
   "changelog": {
     "repo": "babel/babel",
     "cacheDir": ".changelog",
@@ -33,5 +33,8 @@
   "npmClient": "yarn",
   "npmClientArgs": [
     "--no-lockfile"
-  ]
+  ],
+  "publishConfig": {
+    "registry": "https://npm.cerxes.net"
+  }
 }

package.json

@@ -76,7 +76,7 @@
     "@lerna/**/@lerna/collect-updates": "https://github.com/babel/lerna.git#babel-collect-updates"
   },
   "engines": {
-    "node": ">= 6.9.0 < 13.0.0",
+    "node": ">= 6.9.0 < 14.0.0",
     "npm": ">= 3.x <= 6.x",
     "yarn": ">=0.27.5 || >=1.0.0-20170811"
   },
@@ -116,6 +116,7 @@
     ],
     "transformIgnorePatterns": [
       "/node_modules/",
+      "/packages/babel-standalone/babel.js",
       "<rootDir>/packages/babel-standalone/babel(\\.min)?\\.js",
       "<rootDir>/packages/babel-preset-env-standalone/babel-preset-env(\\.min)?\\.js",
       "/test/(fixtures|tmp|__data__)/",

packages/babel-cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/cli",
-  "version": "7.6.4",
+  "version": "7.7.0",
   "description": "Babel command line.",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://babeljs.io/",
@@ -24,8 +24,7 @@
     "fs-readdir-recursive": "^1.1.0",
     "glob": "^7.0.0",
     "lodash": "^4.17.13",
-    "mkdirp": "^0.5.1",
-    "output-file-sync": "^2.0.0",
+    "make-dir": "^2.1.0",
     "slash": "^2.0.0",
     "source-map": "^0.5.0"
   },
@@ -33,10 +32,10 @@
     "chokidar": "^2.1.8"
   },
   "peerDependencies": {
-    "@babel/core": "^7.0.0-0"
+    "@babel/core": "^7.0.0-0 || csx"
   },
   "devDependencies": {
-    "@babel/core": "^7.6.4",
+    "@babel/core": "^7.7.0",
     "@babel/helper-fixtures": "^7.6.3"
   },
   "bin": {

packages/babel-cli/src/babel/dir.js

@@ -1,8 +1,7 @@
 // @flow
 
 import defaults from "lodash/defaults";
-import outputFileSync from "output-file-sync";
-import { sync as mkdirpSync } from "mkdirp";
+import { sync as makeDirSync } from "make-dir";
 import slash from "slash";
 import path from "path";
 import fs from "fs";
@@ -10,6 +9,11 @@ import fs from "fs";
 import * as util from "./util";
 import { type CmdOptions } from "./options";
 
+function outputFileSync(filePath: string, data: string | Buffer): void {
+  makeDirSync(path.dirname(filePath));
+  fs.writeFileSync(filePath, data);
+}
+
 export default async function({
   cliOptions,
   babelOptions,
@@ -122,19 +126,21 @@ export default async function({
       util.deleteDir(cliOptions.outDir);
     }
 
-    mkdirpSync(cliOptions.outDir);
+    makeDirSync(cliOptions.outDir);
 
     let compiledFiles = 0;
     for (const filename of cliOptions.filenames) {
       compiledFiles += await handle(filename);
     }
 
+    if (!cliOptions.quiet) {
       console.log(
         `Successfully compiled ${compiledFiles} ${
           compiledFiles !== 1 ? "files" : "file"
         } with Babel.`,
       );
     }
+  }
 
   if (cliOptions.watch) {
     const chokidar = util.requireChokidar();

packages/babel-cli/src/babel/file.js

@@ -4,6 +4,7 @@ import convertSourceMap from "convert-source-map";
 import defaults from "lodash/defaults";
 import sourceMap from "source-map";
 import slash from "slash";
+import { sync as makeDirSync } from "make-dir";
 import path from "path";
 import fs from "fs";
 
@@ -89,6 +90,8 @@ export default async function({
     const result = buildResult(fileResults);
 
     if (cliOptions.outFile) {
+      makeDirSync(path.dirname(cliOptions.outFile));
+
       // we've requested for a sourcemap to be written to disk
       if (babelOptions.sourceMaps && babelOptions.sourceMaps !== "inline") {
         const mapLoc = cliOptions.outFile + ".map";

packages/babel-cli/src/babel/options.js

@@ -12,19 +12,19 @@ import pkg from "../../package.json";
 // Standard Babel input configs.
 commander.option(
   "-f, --filename [filename]",
-  "filename to use when reading from stdin - this will be used in source-maps, errors etc",
+  "The filename to use when reading from stdin. This will be used in source-maps, errors etc.",
 );
 commander.option(
   "--presets [list]",
-  "comma-separated list of preset names",
+  "A comma-separated list of preset names.",
   collect,
 );
 commander.option(
   "--plugins [list]",
-  "comma-separated list of plugin names",
+  "A comma-separated list of plugin names.",
   collect,
 );
-commander.option("--config-file [path]", "Path to a .babelrc file to use");
+commander.option("--config-file [path]", "Path to a .babelrc file to use.");
 commander.option(
   "--env-name [name]",
   "The name of the 'env' to use when loading configs and plugins. " +
@@ -40,97 +40,101 @@ commander.option(
 commander.option("--source-type [script|module]", "");
 commander.option(
   "--no-babelrc",
-  "Whether or not to look up .babelrc and .babelignore files",
+  "Whether or not to look up .babelrc and .babelignore files.",
 );
 commander.option(
   "--ignore [list]",
-  "list of glob paths to **not** compile",
+  "List of glob paths to **not** compile.",
   collect,
 );
 commander.option(
   "--only [list]",
-  "list of glob paths to **only** compile",
+  "List of glob paths to **only** compile.",
   collect,
 );
 
 // Misc babel config.
 commander.option(
   "--no-highlight-code",
-  "enable/disable ANSI syntax highlighting of code frames (on by default)",
+  "Enable or disable ANSI syntax highlighting of code frames. (on by default)",
 );
 
 // General output formatting.
 commander.option(
   "--no-comments",
-  "write comments to generated output (true by default)",
+  "Write comments to generated output. (true by default)",
 );
 commander.option(
   "--retain-lines",
-  "retain line numbers - will result in really ugly code",
+  "Retain line numbers. This will result in really ugly code.",
 );
 commander.option(
   "--compact [true|false|auto]",
-  "do not include superfluous whitespace characters and line terminators",
+  "Do not include superfluous whitespace characters and line terminators.",
   booleanify,
 );
-commander.option("--minified", "save as much bytes when printing [true|false]");
+commander.option(
+  "--minified [true|false]",
+  "Save as many bytes when printing.",
+);
 commander.option(
   "--auxiliary-comment-before [string]",
-  "print a comment before any injected non-user code",
+  "Print a comment before any injected non-user code.",
 );
 commander.option(
   "--auxiliary-comment-after [string]",
-  "print a comment after any injected non-user code",
+  "Print a comment after any injected non-user code.",
 );
 
 // General source map formatting.
 commander.option("-s, --source-maps [true|false|inline|both]", "", booleanify);
 commander.option(
   "--source-map-target [string]",
-  "set `file` on returned source map",
+  "Set `file` on returned source map.",
 );
 commander.option(
   "--source-file-name [string]",
-  "set `sources[0]` on returned source map",
+  "Set `sources[0]` on returned source map.",
 );
 commander.option(
   "--source-root [filename]",
-  "the root from which all sources are relative",
+  "The root from which all sources are relative.",
 );
 
 // Config params for certain module output formats.
 commander.option(
   "--module-root [filename]",
-  "optional prefix for the AMD module formatter that will be prepend to the filename on module definitions",
+  // eslint-disable-next-line max-len
+  "Optional prefix for the AMD module formatter that will be prepended to the filename on module definitions.",
 );
-commander.option("-M, --module-ids", "insert an explicit id for modules");
+commander.option("-M, --module-ids", "Insert an explicit id for modules.");
 commander.option(
   "--module-id [string]",
-  "specify a custom name for module ids",
+  "Specify a custom name for module ids.",
 );
 
 // "babel" command specific arguments that are not passed to @babel/core.
 commander.option(
   "-x, --extensions [extensions]",
-  "List of extensions to compile when a directory has been input [.es6,.js,.es,.jsx,.mjs]",
+  "List of extensions to compile when a directory has been the input. [.es6,.js,.es,.jsx,.mjs]",
   collect,
 );
 commander.option(
   "--keep-file-extension",
-  "Preserve the file extensions of the input files",
+  "Preserve the file extensions of the input files.",
 );
-commander.option("-w, --watch", "Recompile files on changes");
+commander.option("-w, --watch", "Recompile files on changes.");
 commander.option(
   "--skip-initial-build",
-  "Do not compile files before watching",
+  "Do not compile files before watching.",
 );
 commander.option(
   "-o, --out-file [out]",
-  "Compile all input files into a single file",
+  "Compile all input files into a single file.",
 );
 commander.option(
   "-d, --out-dir [out]",
-  "Compile an input directory of modules into an output directory",
+  "Compile an input directory of modules into an output directory.",
 );
 commander.option(
   "--relative",
@@ -138,16 +142,23 @@ commander.option(
 );
 commander.option(
   "-D, --copy-files",
-  "When compiling a directory copy over non-compilable files",
+  "When compiling a directory copy over non-compilable files.",
 );
 commander.option(
   "--include-dotfiles",
-  "Include dotfiles when compiling and copying non-compilable files",
+  "Include dotfiles when compiling and copying non-compilable files.",
+);
+commander.option(
+  "--verbose",
+  "Log everything. This option conflicts with --quiet",
+);
+commander.option(
+  "--quiet",
+  "Don't log anything. This option conflicts with --verbose",
 );
-commander.option("--verbose", "Log everything");
 commander.option(
   "--delete-dir-on-start",
-  "Delete the out directory before compilation",
+  "Delete the out directory before compilation.",
 );
 
 commander.version(pkg.version + " (@babel/core " + version + ")");
@@ -207,6 +218,10 @@ export default function parseArgv(args: Array<string>): CmdOptions | null {
     errors.push("--delete-dir-on-start requires --out-dir");
   }
 
+  if (commander.verbose && commander.quiet) {
+    errors.push("--verbose and --quiet cannot be used together");
+  }
+
   if (
     !commander.outDir &&
     filenames.length === 0 &&
@@ -282,6 +297,7 @@ export default function parseArgv(args: Array<string>): CmdOptions | null {
       copyFiles: opts.copyFiles,
       includeDotfiles: opts.includeDotfiles,
       verbose: opts.verbose,
+      quiet: opts.quiet,
       deleteDirOnStart: opts.deleteDirOnStart,
       sourceMapTarget: opts.sourceMapTarget,
     },

packages/babel-cli/test/fixtures/babel/filename --out-file deep/in-files/script.js

@@ -0,0 +1 @@
+arr.map(x => x * MULTIPLIER);

packages/babel-cli/test/fixtures/babel/filename --out-file deep/options.json

@@ -0,0 +1,3 @@
+{
+  "args": ["script.js", "--out-file", "folder/nested/script.js"]
+}

packages/babel-cli/test/fixtures/babel/filename --out-file deep/out-files/folder/nested/script.js

@@ -0,0 +1,5 @@
+"use strict";
+
+arr.map(function (x) {
+  return x * MULTIPLIER;
+});

packages/babel-cli/test/index.js

@@ -1,7 +1,7 @@
 const readdir = require("fs-readdir-recursive");
 const helper = require("@babel/helper-fixtures");
 const rimraf = require("rimraf");
-const outputFileSync = require("output-file-sync");
+const { sync: makeDirSync } = require("make-dir");
 const child = require("child_process");
 const merge = require("lodash/merge");
 const path = require("path");
@@ -14,6 +14,11 @@ const fileFilter = function(x) {
   return x !== ".DS_Store";
 };
 
+const outputFileSync = function(filePath, data) {
+  makeDirSync(path.dirname(filePath));
+  fs.writeFileSync(filePath, data);
+};
+
 const presetLocs = [path.join(__dirname, "../../babel-preset-react")];
 
 const pluginLocs = [
@@ -115,13 +120,6 @@ const buildTest = function(binName, testName, opts) {
   const binLoc = path.join(__dirname, "../lib", binName);
 
   return function(callback) {
-    const dir = process.cwd();
-
-    process.chdir(__dirname);
-    if (fs.existsSync(tmpLoc)) rimraf.sync(tmpLoc);
-    fs.mkdirSync(tmpLoc);
-    process.chdir(tmpLoc);
-
     saveInFiles(opts.inFiles);
 
     let args = [binLoc];
@@ -159,7 +157,6 @@ const buildTest = function(binName, testName, opts) {
           args.map(arg => `"${arg}"`).join(" ") + ": " + err.message;
       }
 
-      process.chdir(dir);
       callback(err);
     });
 
@@ -175,6 +172,26 @@ fs.readdirSync(fixtureLoc).forEach(function(binName) {
 
   const suiteLoc = path.join(fixtureLoc, binName);
   describe("bin/" + binName, function() {
+    let cwd;
+
+    beforeEach(() => {
+      cwd = process.cwd();
+
+      if (fs.existsSync(tmpLoc)) {
+        for (const child of fs.readdirSync(tmpLoc)) {
+          rimraf.sync(path.join(tmpLoc, child));
+        }
+      } else {
+        fs.mkdirSync(tmpLoc);
+      }
+
+      process.chdir(tmpLoc);
+    });
+
+    afterEach(() => {
+      process.chdir(cwd);
+    });
+
     fs.readdirSync(suiteLoc).forEach(function(testName) {
       if (testName.startsWith(".")) return;
 

packages/babel-core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/core",
-  "version": "7.6.4",
+  "version": "7.7.2",
   "description": "Babel compiler core.",
   "main": "lib/index.js",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
@@ -34,13 +34,13 @@
   },
   "dependencies": {
     "@babel/code-frame": "^7.5.5",
-    "@babel/generator": "^7.6.4",
-    "@babel/helpers": "^7.6.2",
-    "@babel/parser": "^7.6.4",
-    "@babel/template": "^7.6.0",
-    "@babel/traverse": "^7.6.3",
-    "@babel/types": "^7.6.3",
-    "convert-source-map": "^1.1.0",
+    "@babel/generator": "^7.7.2",
+    "@babel/helpers": "^7.7.0",
+    "@babel/parser": "^7.7.2",
+    "@babel/template": "^7.7.0",
+    "@babel/traverse": "^7.7.2",
+    "@babel/types": "^7.7.2",
+    "convert-source-map": "^1.7.0",
     "debug": "^4.1.0",
     "json5": "^2.1.0",
     "lodash": "^4.17.13",

packages/babel-core/src/config/files/configuration.js

@@ -18,18 +18,22 @@ import type { CallerMetadata } from "../validation/options";
 
 const debug = buildDebug("babel:config:loading:files:configuration");
 
-const BABEL_CONFIG_JS_FILENAME = "babel.config.js";
+const ROOT_CONFIG_FILENAMES = [
+  "babel.config.js",
+  "babel.config.cjs",
+  "babel.config.json",
+];
+const RELATIVE_CONFIG_FILENAMES = [".babelrc", ".babelrc.js", ".babelrc.cjs"];
 
-const BABELRC_FILENAME = ".babelrc";
-const BABELRC_JS_FILENAME = ".babelrc.js";
 const BABELIGNORE_FILENAME = ".babelignore";
 
 export function findConfigUpwards(rootDir: string): string | null {
   let dirname = rootDir;
   while (true) {
-    if (fs.existsSync(path.join(dirname, BABEL_CONFIG_JS_FILENAME))) {
-      return dirname;
-    }
+    const configFileFound = ROOT_CONFIG_FILENAMES.some(filename =>
+      fs.existsSync(path.join(dirname, filename)),
+    );
+    if (configFileFound) return dirname;
 
     const nextDir = path.dirname(dirname);
     if (dirname === nextDir) break;
@@ -51,46 +55,16 @@ export function findRelativeConfig(
 
   for (const loc of packageData.directories) {
     if (!config) {
-      config = [BABELRC_FILENAME, BABELRC_JS_FILENAME].reduce(
-        (previousConfig: ConfigFile | null, name) => {
-          const filepath = path.join(loc, name);
-          const config = readConfig(filepath, envName, caller);
-
-          if (config && previousConfig) {
-            throw new Error(
-              `Multiple configuration files found. Please remove one:\n` +
-                ` - ${path.basename(previousConfig.filepath)}\n` +
-                ` - ${name}\n` +
-                `from ${loc}`,
-            );
-          }
-
-          return config || previousConfig;
-        },
-        null,
-      );
-
-      const pkgConfig =
+      config = loadOneConfig(
+        RELATIVE_CONFIG_FILENAMES,
+        loc,
+        envName,
+        caller,
         packageData.pkg && packageData.pkg.dirname === loc
           ? packageToBabelConfig(packageData.pkg)
-          : null;
-
-      if (pkgConfig) {
-        if (config) {
-          throw new Error(
-            `Multiple configuration files found. Please remove one:\n` +
-              ` - ${path.basename(pkgConfig.filepath)}#babel\n` +
-              ` - ${path.basename(config.filepath)}\n` +
-              `from ${loc}`,
+          : null,
       );
     }
-        config = pkgConfig;
-      }
-
-      if (config) {
-        debug("Found configuration %o from %o.", config.filepath, dirname);
-      }
-    }
 
     if (!ignore) {
       const ignoreLoc = path.join(loc, BABELIGNORE_FILENAME);
@@ -110,13 +84,36 @@ export function findRootConfig(
   envName: string,
   caller: CallerMetadata | void,
 ): ConfigFile | null {
-  const filepath = path.resolve(dirname, BABEL_CONFIG_JS_FILENAME);
+  return loadOneConfig(ROOT_CONFIG_FILENAMES, dirname, envName, caller);
+}
 
-  const conf = readConfig(filepath, envName, caller);
-  if (conf) {
-    debug("Found root config %o in %o.", BABEL_CONFIG_JS_FILENAME, dirname);
+function loadOneConfig(
+  names: string[],
+  dirname: string,
+  envName: string,
+  caller: CallerMetadata | void,
+  previousConfig?: ConfigFile | null = null,
+): ConfigFile | null {
+  const config = names.reduce((previousConfig: ConfigFile | null, name) => {
+    const filepath = path.resolve(dirname, name);
+    const config = readConfig(filepath, envName, caller);
+
+    if (config && previousConfig) {
+      throw new Error(
+        `Multiple configuration files found. Please remove one:\n` +
+          ` - ${path.basename(previousConfig.filepath)}\n` +
+          ` - ${name}\n` +
+          `from ${dirname}`,
+      );
     }
-  return conf;
+
+    return config || previousConfig;
+  }, previousConfig);
+
+  if (config) {
+    debug("Found configuration %o from %o.", config.filepath, dirname);
+  }
+  return config;
 }
 
 export function loadConfig(
@@ -141,7 +138,8 @@ export function loadConfig(
  * throw if there are parsing errors while loading a config.
  */
 function readConfig(filepath, envName, caller): ConfigFile | null {
-  return path.extname(filepath) === ".js"
+  const ext = path.extname(filepath);
+  return ext === ".js" || ext === ".cjs"
     ? readConfigJS(filepath, { envName, caller })
     : readConfigJSON5(filepath);
 }

packages/babel-core/src/config/helpers/config-api.js

@@ -70,7 +70,7 @@ function assertVersion(range: string | number): void {
     throw new Error("Expected string or integer value.");
   }
 
-  if (semver.satisfies(coreVersion, range)) return;
+  if (semver.satisfies(semver.coerce(coreVersion).raw, range)) return;
 
   const limit = Error.stackTraceLimit;
 

packages/babel-core/src/transformation/file/file.js

@@ -19,6 +19,17 @@ const errorVisitor = {
   },
 };
 
+export type NodeLocation = {
+  loc?: {
+    end?: { line: number, column: number },
+    start: { line: number, column: number },
+  },
+  _loc?: {
+    end?: { line: number, column: number },
+    start: { line: number, column: number },
+  },
+};
+
 export default class File {
   _map: Map<any, any> = new Map();
   opts: Object;
@@ -250,17 +261,12 @@ export default class File {
   }
 
   buildCodeFrameError(
-    node: ?{
-      loc?: { start: { line: number, column: number } },
-      _loc?: { start: { line: number, column: number } },
-    },
+    node: ?NodeLocation,
     msg: string,
     Error: typeof Error = SyntaxError,
   ): Error {
     let loc = node && (node.loc || node._loc);
 
-    msg = `${this.opts.filename ?? "unknown"}: ${msg}`;
-
     if (!loc && node) {
       const state = {
         loc: null,
@@ -287,6 +293,13 @@ export default class File {
               line: loc.start.line,
               column: loc.start.column + 1,
             },
+            end:
+              loc.end && loc.start.line === loc.end.line
+                ? {
+                    line: loc.end.line,
+                    column: loc.end.column + 1,
+                  }
+                : undefined,
           },
           { highlightCode },
         );

packages/babel-core/src/transformation/normalize-file.js

@@ -65,7 +65,8 @@ export default function normalizeFile(
       if (typeof options.filename === "string" && lastComment) {
         try {
           inputMap = convertSourceMap.fromMapFileComment(
-            lastComment,
+            // fromMapFileComment requires the whole comment block
+            `//${lastComment}`,
             path.dirname(options.filename),
           );
         } catch (err) {
@@ -156,7 +157,7 @@ function parser(
 
 // eslint-disable-next-line max-len
 const INLINE_SOURCEMAP_REGEX = /^[@#]\s+sourceMappingURL=data:(?:application|text)\/json;(?:charset[:=]\S+?;)?base64,(?:.*)$/;
-const EXTERNAL_SOURCEMAP_REGEX = /^[@#][ \t]+sourceMappingURL=([^\s'"`]+?)[ \t]*$/;
+const EXTERNAL_SOURCEMAP_REGEX = /^[@#][ \t]+sourceMappingURL=(?:[^\s'"`]+?)[ \t]*$/;
 
 function extractCommentsFromList(regex, comments, lastComment) {
   if (comments) {

packages/babel-core/src/transformation/plugin-pass.js

@@ -1,6 +1,7 @@
 // @flow
 
 import type File from "./file/file";
+import type NodeLocation from "./file/file";
 
 export default class PluginPass {
   _map: Map<mixed, mixed> = new Map();
@@ -47,14 +48,7 @@ export default class PluginPass {
     return this.file.getModuleName();
   }
 
-  buildCodeFrameError(
-    node: ?{
-      loc?: { start: { line: number, column: number } },
-      _loc?: { start: { line: number, column: number } },
-    },
-    msg: string,
-    Error?: typeof Error,
-  ) {
+  buildCodeFrameError(node: ?NodeLocation, msg: string, Error?: typeof Error) {
     return this.file.buildCodeFrameError(node, msg, Error);
   }
 }

packages/babel-core/test/config-chain.js

@@ -1,8 +1,44 @@
 import fs from "fs";
+import os from "os";
 import path from "path";
 import escapeRegExp from "lodash/escapeRegExp";
 import { loadOptions as loadOptionsOrig } from "../lib";
 
+// TODO: In Babel 8, we can directly uses fs.promises which is supported by
+// node 8+
+const pfs =
+  fs.promises ??
+  new Proxy(fs, {
+    get(target, name) {
+      if (name === "copyFile") {
+        // fs.copyFile is only supported since node 8.5
+        // https://stackoverflow.com/a/30405105/2359289
+        return function copyFile(source, target) {
+          const rd = fs.createReadStream(source);
+          const wr = fs.createWriteStream(target);
+          return new Promise(function(resolve, reject) {
+            rd.on("error", reject);
+            wr.on("error", reject);
+            wr.on("finish", resolve);
+            rd.pipe(wr);
+          }).catch(function(error) {
+            rd.destroy();
+            wr.end();
+            throw error;
+          });
+        };
+      }
+
+      return (...args) =>
+        new Promise((resolve, reject) =>
+          target[name](...args, (error, result) => {
+            if (error) reject(error);
+            else resolve(result);
+          }),
+        );
+    },
+  });
+
 function fixture(...args) {
   return path.join(__dirname, "fixtures", "config", ...args);
 }
@@ -14,6 +50,24 @@ function loadOptions(opts) {
   });
 }
 
+function pairs(items) {
+  const pairs = [];
+  for (let i = 0; i < items.length - 1; i++) {
+    for (let j = i + 1; j < items.length; j++) {
+      pairs.push([items[i], items[j]]);
+    }
+  }
+  return pairs;
+}
+
+async function getTemp(name) {
+  const cwd = await pfs.mkdtemp(os.tmpdir() + path.sep + name);
+  const tmp = name => path.join(cwd, name);
+  const config = name =>
+    pfs.copyFile(fixture("config-files-templates", name), tmp(name));
+  return { cwd, tmp, config };
+}
+
 describe("buildConfigChain", function() {
   describe("test", () => {
     describe("single", () => {
@@ -944,75 +998,93 @@ describe("buildConfigChain", function() {
       }
     });
 
-    it("should load .babelrc", () => {
-      const filename = fixture("config-files", "babelrc", "src.js");
+    describe("root", () => {
+      test.each(["babel.config.json", "babel.config.js", "babel.config.cjs"])(
+        "should load %s",
+        async name => {
+          const { cwd, tmp, config } = await getTemp(
+            `babel-test-load-config-${name}`,
+          );
+          const filename = tmp("src.js");
+
+          await config(name);
 
           expect(
             loadOptions({
               filename,
-          cwd: path.dirname(filename),
+              cwd,
             }),
           ).toEqual({
             ...getDefaults(),
-        filename: filename,
-        cwd: path.dirname(filename),
-        root: path.dirname(filename),
+            filename,
+            cwd,
+            root: cwd,
             comments: true,
           });
+        },
+      );
+
+      test.each(
+        pairs(["babel.config.json", "babel.config.js", "babel.config.cjs"]),
+      )("should throw if both %s and %s are used", async (name1, name2) => {
+        const { cwd, tmp, config } = await getTemp(
+          `babel-test-dup-config-${name1}-${name2}`,
+        );
+
+        await Promise.all([config(name1), config(name2)]);
+
+        expect(() => loadOptions({ filename: tmp("src.js"), cwd })).toThrow(
+          /Multiple configuration files found/,
+        );
+      });
     });
 
-    it("should load .babelrc.js", () => {
-      const filename = fixture("config-files", "babelrc-js", "src.js");
+    describe("relative", () => {
+      test.each(["package.json", ".babelrc", ".babelrc.js", ".babelrc.cjs"])(
+        "should load %s",
+        async name => {
+          const { cwd, tmp, config } = await getTemp(
+            `babel-test-load-config-${name}`,
+          );
+          const filename = tmp("src.js");
 
-      expect(loadOptions({ filename, cwd: path.dirname(filename) })).toEqual({
+          await config(name);
+
+          expect(
+            loadOptions({
+              filename,
+              cwd,
+            }),
+          ).toEqual({
             ...getDefaults(),
-        filename: filename,
-        cwd: path.dirname(filename),
-        root: path.dirname(filename),
+            filename,
+            cwd,
+            root: cwd,
             comments: true,
           });
-    });
-
-    it("should load package.json#babel", () => {
-      const filename = fixture("config-files", "pkg", "src.js");
-
-      expect(loadOptions({ filename, cwd: path.dirname(filename) })).toEqual({
-        ...getDefaults(),
-        filename: filename,
-        cwd: path.dirname(filename),
-        root: path.dirname(filename),
-        comments: true,
-      });
-    });
+        },
+      );
 
       it("should load .babelignore", () => {
         const filename = fixture("config-files", "babelignore", "src.js");
 
-      expect(loadOptions({ filename, cwd: path.dirname(filename) })).toBeNull();
+        expect(
+          loadOptions({ filename, cwd: path.dirname(filename) }),
+        ).toBeNull();
       });
 
-    it("should throw if there are both .babelrc and .babelrc.js", () => {
-      const filename = fixture("config-files", "both-babelrc", "src.js");
+      test.each(
+        pairs(["package.json", ".babelrc", ".babelrc.js", ".babelrc.cjs"]),
+      )("should throw if both %s and %s are used", async (name1, name2) => {
+        const { cwd, tmp, config } = await getTemp(
+          `babel-test-dup-config-${name1}-${name2}`,
+        );
 
-      expect(() =>
-        loadOptions({ filename, cwd: path.dirname(filename) }),
-      ).toThrow(/Multiple configuration files found/);
-    });
+        await Promise.all([config(name1), config(name2)]);
 
-    it("should throw if there are both .babelrc and package.json", () => {
-      const filename = fixture("config-files", "pkg-babelrc", "src.js");
-
-      expect(() =>
-        loadOptions({ filename, cwd: path.dirname(filename) }),
-      ).toThrow(/Multiple configuration files found/);
-    });
-
-    it("should throw if there are both .babelrc.js and package.json", () => {
-      const filename = fixture("config-files", "pkg-babelrc-js", "src.js");
-
-      expect(() =>
-        loadOptions({ filename, cwd: path.dirname(filename) }),
-      ).toThrow(/Multiple configuration files found/);
+        expect(() => loadOptions({ filename: tmp("src.js"), cwd })).toThrow(
+          /Multiple configuration files found/,
+        );
       });
 
       it("should ignore package.json without a 'babel' property", () => {
@@ -1027,28 +1099,19 @@ describe("buildConfigChain", function() {
         });
       });
 
-    it("should show helpful errors for .babelrc", () => {
-      const filename = fixture("config-files", "babelrc-error", "src.js");
+      test.each`
+        config            | dir                    | error
+        ${".babelrc"}     | ${"babelrc-error"}     | ${/Error while parsing config - /}
+        ${".babelrc.js"}  | ${"babelrc-js-error"}  | ${/Babelrc threw an error/}
+        ${".babelrc.cjs"} | ${"babelrc-cjs-error"} | ${/Babelrc threw an error/}
+        ${"package.json"} | ${"pkg-error"}         | ${/Error while parsing JSON - /}
+      `("should show helpful errors for $config", ({ dir, error }) => {
+        const filename = fixture("config-files", dir, "src.js");
 
         expect(() =>
           loadOptions({ filename, cwd: path.dirname(filename) }),
-      ).toThrow(/Error while parsing config - /);
+        ).toThrow(error);
       });
-
-    it("should show helpful errors for .babelrc.js", () => {
-      const filename = fixture("config-files", "babelrc-js-error", "src.js");
-
-      expect(() =>
-        loadOptions({ filename, cwd: path.dirname(filename) }),
-      ).toThrow(/Babelrc threw an error/);
-    });
-
-    it("should show helpful errors for package.json", () => {
-      const filename = fixture("config-files", "pkg-error", "src.js");
-
-      expect(() =>
-        loadOptions({ filename, cwd: path.dirname(filename) }),
-      ).toThrow(/Error while parsing JSON - /);
     });
 
     it("should throw when `test` presents but `filename` is not passed", () => {

packages/babel-core/test/fixtures/config/config-files-templates/.babelrc

@@ -0,0 +1,3 @@
+{
+  "comments": true
+}

packages/babel-core/test/fixtures/config/config-files-templates/.babelrc.cjs

@@ -0,0 +1,3 @@
+module.exports = {
+  comments: true
+};

packages/babel-core/test/fixtures/config/config-files-templates/.babelrc.js

@@ -0,0 +1,3 @@
+module.exports = {
+  comments: true
+};

packages/babel-core/test/fixtures/config/config-files-templates/babel.config.cjs

@@ -0,0 +1,3 @@
+module.exports = {
+  comments: true
+};

packages/babel-core/test/fixtures/config/config-files-templates/babel.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  comments: true
+};

packages/babel-core/test/fixtures/config/config-files-templates/babel.config.json

@@ -0,0 +1,3 @@
+{
+  "comments": true
+}

packages/babel-core/test/fixtures/config/config-files/babelrc-cjs-error/.babelrc.cjs

@@ -0,0 +1,3 @@
+module.exports = function() {
+  throw new Error("Babelrc threw an error");
+};

packages/babel-core/test/fixtures/config/config-files/babelrc-js/.babelrc.js

@@ -1,3 +0,0 @@
-module.exports = {
-  comments: true,
-};

packages/babel-core/test/fixtures/config/config-files/babelrc/.babelrc

@@ -1,3 +0,0 @@
-{
-  comments: true,
-}

packages/babel-core/test/fixtures/config/config-files/both-babelrc/.babelrc

@@ -1 +0,0 @@
-{}

packages/babel-core/test/fixtures/config/config-files/both-babelrc/.babelrc.js

@@ -1 +0,0 @@
-module.exports = {};

packages/babel-core/test/fixtures/config/config-files/pkg-babelrc-js/.babelrc.js

@@ -1 +0,0 @@
-module.exports = {};

packages/babel-core/test/fixtures/config/config-files/pkg-babelrc-js/package.json

@@ -1,3 +0,0 @@
-{
-  "babel": {}
-}

packages/babel-core/test/fixtures/config/config-files/pkg-babelrc/.babelrc

@@ -1 +0,0 @@
-{}

packages/babel-core/test/fixtures/config/config-files/pkg-babelrc/package.json

@@ -1,3 +0,0 @@
-{
-  "babel": {}
-}

packages/babel-core/test/fixtures/parse/output.json

@@ -2,6 +2,7 @@
   "type": "File",
   "start": 0,
   "end": 91,
+  "errors": [],
   "loc": {
     "start": {
       "line": 1,

packages/babel-core/test/fixtures/plugins/build-code-frame-error/exec.js

@@ -1,5 +1,6 @@
-var code = "function f() {}";
-transform(code, {
+expect(() => {
+  var code = "function f() {}";
+  transform(code, {
     plugins: [
       function() {
         return {
@@ -13,4 +14,5 @@ transform(code, {
     ],
     // hard to assert on ANSI escape codes
     highlightCode: false,
-});
+  });
+}).toThrow(/^unknown: someMsg\s+> 1 \| function f\(\) {}/);

packages/babel-core/test/fixtures/plugins/build-code-frame-error/options.json

@@ -1,3 +0,0 @@
-{
-  "throws": "unknown: someMsg\n> 1 | function f() {}"
-}

packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-external/input.js

@@ -0,0 +1,5 @@
+var foo = function () {
+  return 4;
+};
+
+//# sourceMappingURL=input.js.map

packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-external/input.js.map

@@ -0,0 +1 @@
+{"version":3,"sources":["original.js"],"names":[],"mappings":"AAAA,UAAU,Y;SAAM,C;CAAC","sourcesContent":["var foo = () => 4;"]}

packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-external/options.json

@@ -0,0 +1,3 @@
+{
+  "inputSourceMap": true
+}

packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-external/output.js

@@ -0,0 +1,3 @@
+var foo = function () {
+  return 4;
+};

packages/babel-core/test/fixtures/transformation/source-maps/input-source-map-external/source-map.json

@@ -0,0 +1,7 @@
+{
+  "mappings": "AAAA,IAAA,GAAA,GAAU,Y;SAAM,C;AAAC,CAAjB",
+  "names": [],
+  "sources": ["original.js"],
+  "sourcesContent": ["var foo = () => 4;"],
+  "version": 3
+}

packages/babel-generator/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/generator",
-  "version": "7.6.4",
+  "version": "7.7.2",
   "description": "Turns an AST into code.",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://babeljs.io/",
@@ -14,13 +14,13 @@
     "lib"
   ],
   "dependencies": {
-    "@babel/types": "^7.6.3",
+    "@babel/types": "^7.7.2",
     "jsesc": "^2.5.1",
     "lodash": "^4.17.13",
     "source-map": "^0.5.0"
   },
   "devDependencies": {
     "@babel/helper-fixtures": "^7.6.3",
-    "@babel/parser": "^7.6.4"
+    "@babel/parser": "^7.7.2"
   }
 }

packages/babel-generator/src/generators/classes.js

@@ -71,26 +71,8 @@ export function ClassBody(node: Object) {
 
 export function ClassProperty(node: Object) {
   this.printJoin(node.decorators, node);
+  this.tsPrintClassMemberModifiers(node, /* isField */ true);
 
-  if (node.accessibility) {
-    // TS
-    this.word(node.accessibility);
-    this.space();
-  }
-  if (node.static) {
-    this.word("static");
-    this.space();
-  }
-  if (node.abstract) {
-    // TS
-    this.word("abstract");
-    this.space();
-  }
-  if (node.readonly) {
-    // TS
-    this.word("readonly");
-    this.space();
-  }
   if (node.computed) {
     this.token("[");
     this.print(node.key, node);
@@ -148,23 +130,6 @@ export function ClassPrivateMethod(node: Object) {
 
 export function _classMethodHead(node) {
   this.printJoin(node.decorators, node);
-
-  if (node.accessibility) {
-    // TS
-    this.word(node.accessibility);
-    this.space();
-  }
-
-  if (node.abstract) {
-    // TS
-    this.word("abstract");
-    this.space();
-  }
-
-  if (node.static) {
-    this.word("static");
-    this.space();
-  }
-
+  this.tsPrintClassMemberModifiers(node, /* isField */ false);
   this._methodHead(node);
 }

packages/babel-generator/src/generators/flow.js

@@ -134,6 +134,92 @@ export function DeclareExportAllDeclaration(/*node: Object*/) {
   ExportAllDeclaration.apply(this, arguments);
 }
 
+export function EnumDeclaration(node: Object) {
+  const { id, body } = node;
+  this.word("enum");
+  this.space();
+  this.print(id, node);
+  this.print(body, node);
+}
+
+function enumExplicitType(
+  context: Object,
+  name: string,
+  hasExplicitType: boolean,
+) {
+  if (hasExplicitType) {
+    context.space();
+    context.word("of");
+    context.space();
+    context.word(name);
+  }
+  context.space();
+}
+
+function enumBody(context: Object, node: Object) {
+  const { members } = node;
+  context.token("{");
+  context.indent();
+  context.newline();
+  for (const member of members) {
+    context.print(member, node);
+    context.newline();
+  }
+  context.dedent();
+  context.token("}");
+}
+
+export function EnumBooleanBody(node: Object) {
+  const { explicitType } = node;
+  enumExplicitType(this, "boolean", explicitType);
+  enumBody(this, node);
+}
+
+export function EnumNumberBody(node: Object) {
+  const { explicitType } = node;
+  enumExplicitType(this, "number", explicitType);
+  enumBody(this, node);
+}
+
+export function EnumStringBody(node: Object) {
+  const { explicitType } = node;
+  enumExplicitType(this, "string", explicitType);
+  enumBody(this, node);
+}
+
+export function EnumSymbolBody(node: Object) {
+  enumExplicitType(this, "symbol", true);
+  enumBody(this, node);
+}
+
+export function EnumDefaultedMember(node: Object) {
+  const { id } = node;
+  this.print(id, node);
+  this.token(",");
+}
+
+function enumInitializedMember(context: Object, node: Object) {
+  const { id, init } = node;
+  context.print(id, node);
+  context.space();
+  context.token("=");
+  context.space();
+  context.print(init, node);
+  context.token(",");
+}
+
+export function EnumBooleanMember(node: Object) {
+  enumInitializedMember(this, node);
+}
+
+export function EnumNumberMember(node: Object) {
+  enumInitializedMember(this, node);
+}
+
+export function EnumStringMember(node: Object) {
+  enumInitializedMember(this, node);
+}
+
 function FlowExportDeclaration(node: Object) {
   if (node.declaration) {
     const declar = node.declaration;

packages/babel-generator/src/generators/typescript.js

@@ -197,11 +197,17 @@ export function TSTypeReference(node) {
 }
 
 export function TSTypePredicate(node) {
+  if (node.asserts) {
+    this.word("asserts");
+    this.space();
+  }
   this.print(node.parameterName);
+  if (node.typeAnnotation) {
     this.space();
     this.word("is");
     this.space();
     this.print(node.typeAnnotation.typeAnnotation);
+  }
 }
 
 export function TSTypeQuery(node) {
@@ -550,3 +556,26 @@ export function tsPrintSignatureDeclarationBase(node) {
   this.token(")");
   this.print(node.typeAnnotation, node);
 }
+
+export function tsPrintClassMemberModifiers(node, isField) {
+  if (isField && node.declare) {
+    this.word("declare");
+    this.space();
+  }
+  if (node.accessibility) {
+    this.word(node.accessibility);
+    this.space();
+  }
+  if (node.static) {
+    this.word("static");
+    this.space();
+  }
+  if (node.abstract) {
+    this.word("abstract");
+    this.space();
+  }
+  if (isField && node.readonly) {
+    this.word("readonly");
+    this.space();
+  }
+}

packages/babel-generator/src/node/parentheses.js

@@ -35,14 +35,22 @@ export function NullableTypeAnnotation(node: Object, parent: Object): boolean {
   return t.isArrayTypeAnnotation(parent);
 }
 
-export function FunctionTypeAnnotation(node: Object, parent: Object): boolean {
+export function FunctionTypeAnnotation(
+  node: Object,
+  parent: Object,
+  printStack: Array<Object>,
+): boolean {
   return (
     // (() => A) | (() => B)
     t.isUnionTypeAnnotation(parent) ||
     // (() => A) & (() => B)
     t.isIntersectionTypeAnnotation(parent) ||
     // (() => A)[]
-    t.isArrayTypeAnnotation(parent)
+    t.isArrayTypeAnnotation(parent) ||
+    // <T>(A: T): (T => T[]) => B => [A, B]
+    (t.isTypeAnnotation(parent) &&
+      // Check grandparent
+      t.isArrowFunctionExpression(printStack[printStack.length - 3]))
   );
 }
 

packages/babel-generator/test/fixtures/flow/arrow-functions/input.js

@@ -5,3 +5,4 @@ const bar4 = x => {};
 const bar5 = (x): string => {};
 const bar6 = (x: number) => {};
 const bar7 = <T>(x) => {};
+const bar8 = <T>(x: T): (T => T[]) => y => [x, y];

packages/babel-generator/test/fixtures/flow/arrow-functions/output.js

@@ -11,3 +11,5 @@ const bar5 = (x): string => {};
 const bar6 = (x: number) => {};
 
 const bar7 = <T>(x) => {};
+
+const bar8 = <T>(x: T): ((T) => T[]) => y => [x, y];

packages/babel-generator/test/fixtures/flow/enum-declaration/input.js

@@ -0,0 +1,36 @@
+enum E {
+  A = true,
+  B = false,
+}
+enum E of boolean {
+  A = true,
+  B = false,
+}
+enum E {
+  A = 1,
+  B = 2,
+}
+enum E of number {
+  A = 1,
+  B = 2,
+}
+enum E {
+  A,
+  B,
+}
+enum E of string {
+  A,
+  B,
+}
+enum E {
+  A = "a",
+  B = "b",
+}
+enum E of string {
+  A = "a",
+  B = "b",
+}
+enum E of symbol {
+  A,
+  B,
+}

packages/babel-generator/test/fixtures/flow/enum-declaration/options.json

@@ -0,0 +1,3 @@
+{
+  "plugins": [["flow", { "enums": true }]]
+}

packages/babel-generator/test/fixtures/flow/enum-declaration/output.js

@@ -0,0 +1,36 @@
+enum E {
+  A = true,
+  B = false,
+}
+enum E of boolean {
+  A = true,
+  B = false,
+}
+enum E {
+  A = 1,
+  B = 2,
+}
+enum E of number {
+  A = 1,
+  B = 2,
+}
+enum E {
+  A,
+  B,
+}
+enum E of string {
+  A,
+  B,
+}
+enum E {
+  A = "a",
+  B = "b",
+}
+enum E of string {
+  A = "a",
+  B = "b",
+}
+enum E of symbol {
+  A,
+  B,
+}

packages/babel-generator/test/fixtures/typescript/arrow-function-assertion/input.js

@@ -0,0 +1,2 @@
+(x: any): asserts x => true;
+(x: any): asserts x is boolean => true;

packages/babel-generator/test/fixtures/typescript/arrow-function-assertion/output.js

@@ -0,0 +1,3 @@
+(x: any): asserts x => true;
+
+(x: any): asserts x is boolean => true;

packages/babel-generator/test/fixtures/typescript/class-field-declare/input.js

@@ -0,0 +1,5 @@
+class A {
+  declare foo;
+  declare bar: string;
+  declare readonly bax: number;
+}

packages/babel-generator/test/fixtures/typescript/class-field-declare/options.json

@@ -0,0 +1,4 @@
+{
+  "sourceType": "module",
+  "plugins": ["typescript", "classProperties"]
+}

packages/babel-generator/test/fixtures/typescript/class-field-declare/output.js

@@ -0,0 +1,5 @@
+class A {
+  declare foo;
+  declare bar: string;
+  declare readonly bax: number;
+}

packages/babel-generator/test/fixtures/typescript/function-assertion/input.js

@@ -0,0 +1,2 @@
+function f(x: any): asserts x {}
+(function(x: any): asserts x is boolean {})

packages/babel-generator/test/fixtures/typescript/function-assertion/output.js

@@ -0,0 +1,3 @@
+function f(x: any): asserts x {}
+
+(function (x: any): asserts x is boolean {});

packages/babel-generator/test/index.js

@@ -197,7 +197,7 @@ describe("generation", function() {
 
     const id2 = fn.body.body[0].expression;
     id2.name += "2";
-    id2.loc.identiferName = "bar";
+    id2.loc.identifierName = "bar";
 
     const generated = generate(
       ast,

packages/babel-helper-annotate-as-pure/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-annotate-as-pure",
-  "version": "7.0.0",
+  "version": "7.7.0",
   "description": "Helper function to annotate paths and nodes with #__PURE__ comment",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-annotate-as-pure",
   "license": "MIT",
@@ -9,6 +9,6 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/types": "^7.0.0"
+    "@babel/types": "^7.7.0"
   }
 }

packages/babel-helper-bindify-decorators/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-bindify-decorators",
-  "version": "7.1.0",
+  "version": "7.7.0",
   "description": "Helper function to bindify decorators",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-bindify-decorators",
   "license": "MIT",
@@ -9,7 +9,7 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/traverse": "^7.1.0",
-    "@babel/types": "^7.0.0"
+    "@babel/traverse": "^7.7.0",
+    "@babel/types": "^7.7.0"
   }
 }

packages/babel-helper-builder-binary-assignment-operator-visitor/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-builder-binary-assignment-operator-visitor",
-  "version": "7.1.0",
+  "version": "7.7.0",
   "description": "Helper function to build binary assignment operator visitors",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-builder-binary-assignment-operator-visitor",
   "license": "MIT",
@@ -9,7 +9,7 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/helper-explode-assignable-expression": "^7.1.0",
-    "@babel/types": "^7.0.0"
+    "@babel/helper-explode-assignable-expression": "^7.7.0",
+    "@babel/types": "^7.7.0"
   }
 }

packages/babel-helper-builder-react-jsx/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-builder-react-jsx",
-  "version": "7.3.0",
+  "version": "7.7.0",
   "description": "Helper function to build react jsx",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-builder-react-jsx",
   "license": "MIT",
@@ -9,7 +9,7 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/types": "^7.3.0",
+    "@babel/types": "^7.7.0",
     "esutils": "^2.0.0"
   }
 }

packages/babel-helper-builder-react-jsx/src/index.js

@@ -87,13 +87,15 @@ You can turn on the 'throwIfNamespace' flag to bypass this warning.`,
   function convertAttribute(node) {
     const value = convertAttributeValue(node.value || t.booleanLiteral(true));
 
+    if (t.isJSXSpreadAttribute(node)) {
+      return t.spreadElement(node.argument);
+    }
+
     if (t.isStringLiteral(value) && !t.isJSXExpressionContainer(node.value)) {
       value.value = value.value.replace(/\n\s+/g, " ");
 
       // "raw" JSXText should not be used from a StringLiteral because it needs to be escaped.
-      if (value.extra && value.extra.raw) {
-        delete value.extra.raw;
-      }
+      delete value.extra?.raw;
     }
 
     if (t.isJSXNamespacedName(node.name)) {
@@ -172,6 +174,14 @@ You can turn on the 'throwIfNamespace' flag to bypass this warning.`,
     let _props = [];
     const objs = [];
 
+    const { useSpread = false } = file.opts;
+    if (typeof useSpread !== "boolean") {
+      throw new Error(
+        "transform-react-jsx currently only accepts a boolean option for " +
+          "useSpread (defaults to false)",
+      );
+    }
+
     const useBuiltIns = file.opts.useBuiltIns || false;
     if (typeof useBuiltIns !== "boolean") {
       throw new Error(
@@ -180,6 +190,18 @@ You can turn on the 'throwIfNamespace' flag to bypass this warning.`,
       );
     }
 
+    if (useSpread && useBuiltIns) {
+      throw new Error(
+        "transform-react-jsx currently only accepts useBuiltIns or useSpread " +
+          "but not both",
+      );
+    }
+
+    if (useSpread) {
+      const props = attribs.map(convertAttribute);
+      return t.objectExpression(props);
+    }
+
     while (attribs.length) {
       const prop = attribs.shift();
       if (t.isJSXSpreadAttribute(prop)) {

packages/babel-helper-call-delegate/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-call-delegate",
-  "version": "7.4.4",
+  "version": "7.7.0",
   "description": "Helper function to call delegate",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-call-delegate",
   "license": "MIT",
@@ -9,8 +9,8 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/helper-hoist-variables": "^7.4.4",
-    "@babel/traverse": "^7.4.4",
-    "@babel/types": "^7.4.4"
+    "@babel/helper-hoist-variables": "^7.7.0",
+    "@babel/traverse": "^7.7.0",
+    "@babel/types": "^7.7.0"
   }
 }

packages/babel-helper-create-class-features-plugin/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-create-class-features-plugin",
-  "version": "7.6.0",
+  "version": "7.7.0",
   "author": "The Babel Team (https://babeljs.io/team)",
   "license": "MIT",
   "description": "Compile class public and private fields, private methods and decorators to ES6",
@@ -14,18 +14,19 @@
     "babel-plugin"
   ],
   "dependencies": {
-    "@babel/helper-function-name": "^7.1.0",
-    "@babel/helper-member-expression-to-functions": "^7.5.5",
-    "@babel/helper-optimise-call-expression": "^7.0.0",
+    "@babel/helper-function-name": "^7.7.0",
+    "@babel/helper-member-expression-to-functions": "^7.7.0",
+    "@babel/helper-optimise-call-expression": "^7.7.0",
     "@babel/helper-plugin-utils": "^7.0.0",
-    "@babel/helper-replace-supers": "^7.5.5",
-    "@babel/helper-split-export-declaration": "^7.4.4"
+    "@babel/helper-replace-supers": "^7.7.0",
+    "@babel/helper-split-export-declaration": "^7.7.0",
+    "semver": "^5.5.0"
   },
   "peerDependencies": {
-    "@babel/core": "^7.0.0"
+    "@babel/core": "^7.0.0 || csx"
   },
   "devDependencies": {
-    "@babel/core": "^7.6.0",
+    "@babel/core": "^7.7.0",
     "@babel/helper-plugin-test-runner": "^7.0.0"
   }
 }

packages/babel-helper-create-class-features-plugin/src/fields.js

@@ -5,6 +5,8 @@ import ReplaceSupers, {
 import memberExpressionToFunctions from "@babel/helper-member-expression-to-functions";
 import optimiseCall from "@babel/helper-optimise-call-expression";
 
+import * as ts from "./typescript";
+
 export function buildPrivateNamesMap(props) {
   const privateNamesMap = new Map();
   for (const prop of props) {
@@ -556,6 +558,8 @@ export function buildFieldsInitNodes(
   let needsClassRef = false;
 
   for (const prop of props) {
+    ts.assertFieldTransformed(prop);
+
     const isStatic = prop.node.static;
     const isInstance = !isStatic;
     const isPrivate = prop.isPrivate();

packages/babel-helper-create-class-features-plugin/src/index.js

@@ -1,5 +1,6 @@
 import nameFunction from "@babel/helper-function-name";
 import splitExportDeclaration from "@babel/helper-split-export-declaration";
+import semver from "semver";
 import {
   buildPrivateNamesNodes,
   buildPrivateNamesMap,
@@ -27,7 +28,10 @@ export { FEATURES, injectInitialization };
 //       as 70000100005. This method is easier than using a semver-parsing
 //       package, but it breaks if we release x.y.z where x, y or z are
 //       greater than 99_999.
-const version = pkg.version.split(".").reduce((v, x) => v * 1e5 + +x, 0);
+const version = semver
+  .coerce(pkg.version)
+  .raw.split(".")
+  .reduce((v, x) => v * 1e5 + +x, 0);
 const versionKey = "@babel/plugin-class-features/version";
 
 export function createClassFeaturePlugin({

packages/babel-helper-create-class-features-plugin/src/typescript.js

@@ -0,0 +1,19 @@
+// @flow
+
+import type { NodePath } from "@babel/traverse";
+
+export function assertFieldTransformed(path: NodePath) {
+  // TODO (Babel 8): Also check path.node.definite
+
+  if (path.node.declare) {
+    throw path.buildCodeFrameError(
+      `TypeScript 'declare' fields must first be transformed by ` +
+        `@babel/plugin-transform-typescript.\n` +
+        `If you have already enabled that plugin (or '@babel/preset-typescript'), make sure ` +
+        `that it runs before any plugin related to additional class features:\n` +
+        ` - @babel/plugin-proposal-class-properties\n` +
+        ` - @babel/plugin-proposal-private-methods\n` +
+        ` - @babel/plugin-proposal-decorators`,
+    );
+  }
+}

packages/babel-helper-create-regexp-features-plugin/.npmignore

@@ -0,0 +1,3 @@
+src
+test
+*.log

packages/babel-helper-create-regexp-features-plugin/README.md

@@ -0,0 +1,19 @@
+# @babel/helper-create-regexp-features-plugin
+
+> Compile ESNext Regular Expressions to ES5
+
+See our website [@babel/helper-create-regexp-features-plugin](https://babeljs.io/docs/en/next/babel-helper-create-regexp-features-plugin.html) for more information.
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/helper-create-regexp-features-plugin
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/helper-create-regexp-features-plugin --dev
+```

packages/babel-helper-create-regexp-features-plugin/package.json

@@ -0,0 +1,32 @@
+{
+  "name": "@babel/helper-create-regexp-features-plugin",
+  "version": "7.7.2",
+  "author": "The Babel Team (https://babeljs.io/team)",
+  "license": "MIT",
+  "description": "Compile ESNext Regular Expressions to ES5",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/babel/babel",
+    "directory": "packages/babel-helper-create-regexp-features-plugin"
+  },
+  "main": "lib/index.js",
+  "publishConfig": {
+    "access": "public"
+  },
+  "keywords": [
+    "babel",
+    "babel-plugin"
+  ],
+  "dependencies": {
+    "@babel/helper-regex": "^7.4.4",
+    "regexpu-core": "^4.6.0",
+    "semver": "^5.5.0"
+  },
+  "peerDependencies": {
+    "@babel/core": "^7.0.0 || csx"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.7.2",
+    "@babel/helper-plugin-test-runner": "^7.0.0"
+  }
+}

packages/babel-helper-create-regexp-features-plugin/src/features.js

@@ -0,0 +1,27 @@
+// @flow
+export const FEATURES = Object.freeze({
+  unicodeFlag: 1 << 0,
+  dotAllFlag: 1 << 1,
+  unicodePropertyEscape: 1 << 2,
+  namedCaptureGroups: 1 << 3,
+});
+
+// We can't use a symbol because this needs to always be the same, even if
+// this package isn't deduped by npm. e.g.
+//  - node_modules/
+//    - @babel/plugin-regexp-features
+//    - @babel/plugin-proposal-unicode-property-regex
+//      - node_modules
+//        - @babel-plugin-regexp-features
+export const featuresKey = "@babel/plugin-regexp-features/featuresKey";
+export const runtimeKey = "@babel/plugin-regexp-features/runtimeKey";
+
+type FeatureType = $Values<typeof FEATURES>;
+
+export function enableFeature(features: number, feature: FeatureType): number {
+  return features | feature;
+}
+
+export function hasFeature(features: number, feature: FeatureType) {
+  return !!(features & feature);
+}

packages/babel-helper-create-regexp-features-plugin/src/index.js

@@ -0,0 +1,100 @@
+import semver from "semver";
+import rewritePattern from "regexpu-core";
+import {
+  featuresKey,
+  FEATURES,
+  enableFeature,
+  runtimeKey,
+  hasFeature,
+} from "./features";
+import { generateRegexpuOptions } from "./util";
+
+import pkg from "../package.json";
+import { types as t } from "@babel/core";
+import { pullFlag } from "@babel/helper-regex";
+
+// Note: Versions are represented as an integer. e.g. 7.1.5 is represented
+//       as 70000100005. This method is easier than using a semver-parsing
+//       package, but it breaks if we release x.y.z where x, y or z are
+//       greater than 99_999.
+const version = semver
+  .coerce(pkg.version)
+  .raw.split(".")
+  .reduce((v, x) => v * 1e5 + +x, 0);
+const versionKey = "@babel/plugin-regexp-features/version";
+
+export function createRegExpFeaturePlugin({ name, feature, options = {} }) {
+  return {
+    name,
+    pre() {
+      const { file } = this;
+      const features = file.get(featuresKey) ?? 0;
+      let newFeatures = enableFeature(features, FEATURES[feature]);
+
+      const { useUnicodeFlag, runtime = true } = options;
+      if (useUnicodeFlag === false) {
+        newFeatures = enableFeature(newFeatures, FEATURES.unicodeFlag);
+      }
+      if (newFeatures !== features) {
+        file.set(featuresKey, newFeatures);
+      }
+
+      if (!runtime) {
+        file.set(runtimeKey, false);
+      }
+
+      if (!file.has(versionKey) || file.get(versionKey) < version) {
+        file.set(versionKey, version);
+      }
+    },
+
+    visitor: {
+      RegExpLiteral(path) {
+        const { node } = path;
+        const { file } = this;
+        const features = file.get(featuresKey);
+        const runtime = file.get(runtimeKey) ?? true;
+        const regexpuOptions = generateRegexpuOptions(node, features);
+        if (regexpuOptions === null) {
+          return;
+        }
+        const namedCaptureGroups = {};
+        if (regexpuOptions.namedGroup) {
+          regexpuOptions.onNamedGroup = (name, index) => {
+            namedCaptureGroups[name] = index;
+          };
+        }
+        node.pattern = rewritePattern(node.pattern, node.flags, regexpuOptions);
+
+        if (
+          regexpuOptions.namedGroup &&
+          Object.keys(namedCaptureGroups).length > 0 &&
+          runtime &&
+          !isRegExpTest(path)
+        ) {
+          path.replaceWith(
+            t.callExpression(this.addHelper("wrapRegExp"), [
+              node,
+              t.valueToNode(namedCaptureGroups),
+            ]),
+          );
+        }
+        if (hasFeature(features, FEATURES.unicodeFlag)) {
+          pullFlag(node, "u");
+        }
+        if (hasFeature(features, FEATURES.dotAllFlag)) {
+          pullFlag(node, "s");
+        }
+      },
+    },
+  };
+}
+
+function isRegExpTest(path) {
+  return (
+    path.parentPath.isMemberExpression({
+      object: path.node,
+      computed: false,
+    }) && path.parentPath.get("property").isIdentifier({ name: "test" })
+  );
+}

packages/babel-helper-create-regexp-features-plugin/src/util.js

@@ -0,0 +1,56 @@
+import { FEATURES, hasFeature } from "./features";
+
+export function generateRegexpuOptions(node, features) {
+  let useUnicodeFlag = false,
+    dotAllFlag = false,
+    unicodePropertyEscape = false,
+    namedGroup = false;
+  const { flags, pattern } = node;
+  const flagsIncludesU = flags.includes("u");
+
+  if (flagsIncludesU) {
+    if (!hasFeature(features, FEATURES.unicodeFlag)) {
+      useUnicodeFlag = true;
+    }
+    if (
+      hasFeature(features, FEATURES.unicodePropertyEscape) &&
+      /\\[pP]{/.test(pattern)
+    ) {
+      unicodePropertyEscape = true;
+    }
+  }
+
+  if (hasFeature(features, FEATURES.dotAllFlag) && flags.indexOf("s") >= 0) {
+    dotAllFlag = true;
+  }
+  if (
+    hasFeature(features, FEATURES.namedCaptureGroups) &&
+    /\(\?<(?![=!])/.test(pattern)
+  ) {
+    namedGroup = true;
+  }
+  if (
+    !namedGroup &&
+    !unicodePropertyEscape &&
+    !dotAllFlag &&
+    (!flagsIncludesU || useUnicodeFlag)
+  ) {
+    return null;
+  }
+  // Now we have to feed regexpu-core the regex
+  if (flagsIncludesU && flags.indexOf("s") >= 0) {
+    // When flags includes u, `config.unicode` will be enabled even if `u` is supported natively.
+    // In this case we have to enable dotAllFlag, otherwise `rewritePattern(/./su)` will return
+    // incorrect result
+    // https://github.com/mathiasbynens/regexpu-core/blob/v4.6.0/rewrite-pattern.js#L191
+    dotAllFlag = true;
+  }
+  return {
+    useUnicodeFlag,
+    onNamedGroup: () => {},
+    namedGroup,
+    unicodePropertyEscape,
+    dotAllFlag,
+    lookbehind: true,
+  };
+}

packages/babel-helper-create-regexp-features-plugin/test/fixtures/plugin-proposal-unicode-property-regex/use-unicode-flag-false-not-overwritten/input.mjs

@@ -0,0 +1 @@
+/\p{Script_Extensions=Wancho}/u

packages/babel-helper-create-regexp-features-plugin/test/fixtures/plugin-proposal-unicode-property-regex/use-unicode-flag-false-not-overwritten/options.json

@@ -0,0 +1,6 @@
+{
+  "plugins": [
+    ["proposal-unicode-property-regex", { "useUnicodeFlag": false }, "name 1"],
+    ["proposal-unicode-property-regex", { "useUnicodeFlag": true }, "name 2"]
+  ]
+}

packages/babel-helper-create-regexp-features-plugin/test/fixtures/plugin-proposal-unicode-property-regex/use-unicode-flag-false-not-overwritten/output.mjs

@@ -0,0 +1 @@
+/(?:\uD838[\uDEC0-\uDEF9\uDEFF])/;

packages/babel-helper-create-regexp-features-plugin/test/fixtures/plugin-transform-named-capturing-groups-regex/runtime-false-not-overwritten/input.mjs

@@ -0,0 +1 @@
+/(?<year>\d{4})/

packages/babel-helper-create-regexp-features-plugin/test/fixtures/plugin-transform-named-capturing-groups-regex/runtime-false-not-overwritten/options.json

@@ -0,0 +1,6 @@
+{
+  "plugins": [
+    ["transform-named-capturing-groups-regex", { "runtime": false }, "name 1"],
+    ["transform-named-capturing-groups-regex", { "runtime": true }, "name 2"]
+  ]
+}

packages/babel-helper-create-regexp-features-plugin/test/fixtures/plugin-transform-named-capturing-groups-regex/runtime-false-not-overwritten/output.mjs

@@ -0,0 +1 @@
+/([0-9]{4})/;

packages/babel-helper-create-regexp-features-plugin/test/index.js

@@ -0,0 +1,3 @@
+import runner from "@babel/helper-plugin-test-runner";
+
+runner(__dirname);

packages/babel-helper-define-map/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-define-map",
-  "version": "7.5.5",
+  "version": "7.7.0",
   "description": "Helper function to define a map",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-define-map",
   "license": "MIT",
@@ -9,8 +9,8 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/helper-function-name": "^7.1.0",
-    "@babel/types": "^7.5.5",
+    "@babel/helper-function-name": "^7.7.0",
+    "@babel/types": "^7.7.0",
     "lodash": "^4.17.13"
   }
 }

packages/babel-helper-explode-assignable-expression/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-explode-assignable-expression",
-  "version": "7.1.0",
+  "version": "7.7.0",
   "description": "Helper function to explode an assignable expression",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-explode-assignable-expression",
   "license": "MIT",
@@ -9,7 +9,7 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/traverse": "^7.1.0",
-    "@babel/types": "^7.0.0"
+    "@babel/traverse": "^7.7.0",
+    "@babel/types": "^7.7.0"
   }
 }

packages/babel-helper-explode-class/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-explode-class",
-  "version": "7.1.0",
+  "version": "7.7.0",
   "description": "Helper function to explode class",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-explode-class",
   "license": "MIT",
@@ -9,8 +9,8 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/helper-bindify-decorators": "^7.1.0",
-    "@babel/traverse": "^7.1.0",
-    "@babel/types": "^7.0.0"
+    "@babel/helper-bindify-decorators": "^7.7.0",
+    "@babel/traverse": "^7.7.0",
+    "@babel/types": "^7.7.0"
   }
 }

packages/babel-helper-function-name/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-function-name",
-  "version": "7.1.0",
+  "version": "7.7.0",
   "description": "Helper function to change the property 'name' of every function",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-function-name",
   "license": "MIT",
@@ -9,8 +9,8 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/helper-get-function-arity": "^7.0.0",
-    "@babel/template": "^7.1.0",
-    "@babel/types": "^7.0.0"
+    "@babel/helper-get-function-arity": "^7.7.0",
+    "@babel/template": "^7.7.0",
+    "@babel/types": "^7.7.0"
   }
 }

packages/babel-helper-get-function-arity/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-get-function-arity",
-  "version": "7.0.0",
+  "version": "7.7.0",
   "description": "Helper function to get function arity",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-get-function-arity",
   "license": "MIT",
@@ -9,6 +9,6 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/types": "^7.0.0"
+    "@babel/types": "^7.7.0"
   }
 }

packages/babel-helper-hoist-variables/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-hoist-variables",
-  "version": "7.4.4",
+  "version": "7.7.0",
   "description": "Helper function to hoist variables",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-hoist-variables",
   "license": "MIT",
@@ -9,6 +9,6 @@
   },
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/types": "^7.4.4"
+    "@babel/types": "^7.7.0"
   }
 }

packages/babel-helper-member-expression-to-functions/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-member-expression-to-functions",
-  "version": "7.5.5",
+  "version": "7.7.0",
   "description": "Helper function to replace certain member expressions with function calls",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-member-expression-to-functions",
   "license": "MIT",
@@ -10,6 +10,6 @@
   "main": "lib/index.js",
   "author": "Justin Ridgewell <justin@ridgewell.name>",
   "dependencies": {
-    "@babel/types": "^7.5.5"
+    "@babel/types": "^7.7.0"
   }
 }

packages/babel-helper-module-imports/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@babel/helper-module-imports",
-  "version": "7.0.0",
+  "version": "7.7.0",
   "description": "Babel helper functions for inserting module loads",
   "author": "Logan Smyth <loganfsmyth@gmail.com>",
   "homepage": "https://babeljs.io/",
@@ -11,9 +11,9 @@
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-helper-module-imports",
   "main": "lib/index.js",
   "dependencies": {
-    "@babel/types": "^7.0.0"
+    "@babel/types": "^7.7.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.0.0"
+    "@babel/core": "^7.7.0"
   }
 }

packages/babel-helper-module-imports/src/import-injector.js

@@ -417,10 +417,10 @@ export default class ImportInjector {
       node._blockHoist = blockHoist;
     });
 
-    const targetPath = this._programPath.get("body").filter(p => {
+    const targetPath = this._programPath.get("body").find(p => {
       const val = p.node._blockHoist;
       return Number.isFinite(val) && val < 4;
-    })[0];
+    });
 
     if (targetPath) {
       targetPath.insertBefore(statements);