[pull] master from babel:master

.circleci/config.yml

@@ -25,12 +25,6 @@ aliases:
   - &artifact_babel_min
     path: ~/babel/packages/babel-standalone/babel.min.js
 
-  - &artifact_env
-    path: ~/babel/packages/babel-preset-env-standalone/babel-preset-env.js
-
-  - &artifact_env_min
-    path: ~/babel/packages/babel-preset-env-standalone/babel-preset-env.min.js
-
   - &test262_workdir
     working_directory: ~/babel/babel-test262-runner
 
@@ -69,8 +63,6 @@ jobs:
       - run: yarn jest "\-standalone/test"
       - store_artifacts: *artifact_babel
       - store_artifacts: *artifact_babel_min
-      - store_artifacts: *artifact_env
-      - store_artifacts: *artifact_env_min
       - save_cache: *save-node-modules-cache
       - save_cache: *save-yarn-cache
 
@@ -96,8 +88,8 @@ jobs:
           command: |
             git clone --recurse-submodules https://github.com/babel/babel-test262-runner
             cd babel-test262-runner
-            yarn
-            yarn add tap-mocha-reporter --dev
+            npm ci
+            npm i tap-mocha-reporter --save-dev
             node lib/download-node
       - run:
           name: Download master branch Test262 artifact
@@ -150,6 +142,14 @@ jobs:
           at: /tmp/verdaccio-workspace
       - run: ./scripts/integration-tests/e2e-babel.sh
 
+  e2e-babel-old-version:
+    executor: node-executor
+    steps:
+      - checkout
+      - attach_workspace:
+          at: /tmp/verdaccio-workspace
+      - run: ./scripts/integration-tests/e2e-babel-old-version.sh
+
   e2e-create-react-app:
     executor: node-executor
     steps:
@@ -199,6 +199,9 @@ workflows:
       - e2e-babel:
           requires:
             - publish-verdaccio
+      - e2e-babel-old-version:
+          requires:
+            - publish-verdaccio
       - e2e-create-react-app:
           requires:
             - publish-verdaccio

.eslintignore

@@ -17,15 +17,13 @@ codemods/*/lib
 codemods/*/dist
 codemods/*/test/fixtures
 codemods/*/test/tmp
+packages/babel-compat-data/build
 packages/babel-preset-env/data/[^(plugin-features|shipped-proposals).js]
 packages/babel-preset-env/test/debug-fixtures
-packages/babel-preset-env-standalone/babel-preset-env.js
-packages/babel-preset-env-standalone/babel-preset-env.min.js
 packages/babel-standalone/babel.js
 packages/babel-standalone/babel.min.js
 packages/babel-parser/test/expressions
 
 eslint/*/lib
 eslint/*/node_modules
-eslint/*/test
-eslint/*/tests
+eslint/*/test/fixtures

.eslintrc.js

@@ -1,7 +1,10 @@
+const path = require("path");
+
 module.exports = {
   root: true,
-  plugins: ["prettier", "@babel/development", "import"],
-  extends: "babel",
+  plugins: ["prettier", "@babel/development", "import", "jest"],
+  // replace it by `@babel/internal` when `@babel/eslint-config-internal` is published
+  extends: path.resolve(__dirname, "eslint/babel-eslint-config-internal"),
   rules: {
     "prettier/prettier": "error",
     // TODO: remove after babel-eslint-config-internal is fully integrated into this repository.
@@ -35,6 +38,14 @@ module.exports = {
       env: {
         jest: true,
       },
+      extends: "plugin:jest/recommended",
+      rules: {
+        "jest/expect-expect": "off",
+        "jest/no-identical-title": "off",
+        "jest/no-standalone-expect": "off",
+        "jest/no-test-callback": "off",
+        "jest/valid-describe": "off"
+      }
     },
     {
       files: ["packages/babel-plugin-*/src/index.js"],

.flowconfig

@@ -14,6 +14,7 @@ codemods/*/src
 lib/file.js
 lib/parser.js
 lib/third-party-libs.js.flow
+lib/preset-modules.js.flow
 packages/babel-types/lib/index.js.flow
 
 [options]

.github/ISSUE_TEMPLATE/Npm_error.md

@@ -0,0 +1,18 @@
+---
+name: "\U0001F4E6 npm error"
+about: "When you get a `No matching version found for ...` error from npm"
+title: ''
+labels: 'i: npm cache'
+assignees: ''
+
+---
+
+<!------------^ Click "Preview" for a nicer view!  -->
+
+First of all, check if the package for which `npm` throws an error is actually published by searching [on the npm website](https://www.npmjs.com/).
+
+If it is, then there is nothing that we can do about it: it was correctly published, but for some reason your package manager client doesn't find it.
+
+If you are using a proxy for the npm registry (maybe it's used by your company, or you are using it because your country blocks the main npm registry), then it's likely that it has cached the old version of the package and it isn't loading the new one. If you can, try clearing the proxy's cache. Otherwise, you will have to wait until the cache is automatically updated (it might take a few hours, or even days).
+
+If you are not using a proxy, or if it isn't a caching problem, please report the issue to npm (https://github.com/npm/cli/issues/new/choose) instead of in this repo!

.github/workflows/lock.yml

@@ -0,0 +1,17 @@
+name: Lock Threads
+
+on:
+  schedule:
+    - cron: '0 4 * * *'
+
+jobs:
+  lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v2
+        with:
+          github-token: ${{ github.token }}
+          issue-lock-inactive-days: '91'
+          issue-lock-labels: 'outdated'
+          pr-lock-inactive-days: '91'
+          pr-lock-labels: 'outdated'

.gitignore

@@ -1,5 +1,11 @@
 .npmrc
 
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.js
+
 .DS_Store
 /node_modules
 /.github/actions/*/node_modules
@@ -56,9 +62,6 @@ package-lock.json
 packages/babel-standalone/babel.js
 packages/babel-standalone/babel.js.map
 packages/babel-standalone/babel.min.js
-packages/babel-preset-env-standalone/babel-preset-env.js
-packages/babel-preset-env-standalone/babel-preset-env.js.map
-packages/babel-preset-env-standalone/babel-preset-env.min.js
 /codemods/*/lib
 /codemods/*/node_modules
 /packages/babel-parser/build