Merge branch 'masterd' into feat/modern-build

* masterd: (24 commits)
  Add TypeScript linting support (facebook#6513)
  Support React Hooks (facebook#5602) (facebook#5997)
  Support browserslist in @babel/preset-env (facebook#6608)
  Add empty mock for http2 (facebook#5686)
  Add note about npx caching (facebook#6374)
  change named import into default import (facebook#6625)
  Stage files for commit after ejecting (facebook#5960)
  Upgrade dependencies (facebook#6614)
  Make compiler variable const instead of let (facebook#6621)
  Type check JSON files (facebook#6615)
  Change class components to functional components in templates (facebook#6451)
  Convert JSON.stringify \n to os.EOL when writing tsconfig.json (facebook#6610)
  Update html-webpack-plugin (facebook#6361)
  Enable click to go to error in console for TypeScript (facebook#6502)
  Update webpack-dev-server to 3.2.1 (facebook#6483)
  [docs] revert removal of newlines from html (facebook#6386)
  Publish
  Prepare 2.1.8 release
  Reapply "Speed up TypeScript v2 (facebook#6406)" (facebook#6586)
  Publish
  ...

# Conflicts:
#	packages/babel-preset-react-app/create.js
#	packages/react-scripts/scripts/build.js

Author: JoviDeCroock

CHANGELOG.md

@@ -1,3 +1,123 @@
+## 2.1.8 (March 7, 2019)
+
+v2.1.8 is a maintenance release that reapplies the TypeScript speed improvements ([#6406](https://github.com/facebook/create-react-app/pull/6406)) in a new major version of `react-dev-utils`.
+
+### Migrating from 2.1.7 to 2.1.8
+
+Inside any created project that has not been ejected, run:
+
+```sh
+npm install --save --save-exact react-scripts@2.1.8
+```
+
+or
+
+```sh
+yarn add --exact react-scripts@2.1.8
+```
+
+## 2.1.7 (March 7, 2019)
+
+v2.1.7 is a maintenance release that temporarily reverts the TypeScript speed improvements ([#6406](https://github.com/facebook/create-react-app/pull/6406)) to fix a dependency issue in `react-dev-utils`.
+
+### Migrating from 2.1.6 to 2.1.7
+
+Inside any created project that has not been ejected, run:
+
+```sh
+npm install --save --save-exact react-scripts@2.1.7
+```
+
+or
+
+```sh
+yarn add --exact react-scripts@2.1.7
+```
+
+## 2.1.6 (March 6, 2019)
+
+v2.1.6 is a maintenance release that brings a few new improvements, most notably:
+
+- :rocket: Reduced TypeScript rebuild times while running the development server. This was previously introduced in v2.1.4 but had to be reverted. Thanks to [@ianschmitz](https://github.com/ianschmitz) for getting this ready.
+
+#### :bug: Bug Fix
+
+- `react-dev-utils`
+  - [#6511](https://github.com/facebook/create-react-app/pull/6511) Fix deploy instructions to make link clickable. ([@sbimochan](https://github.com/sbimochan))
+- `react-scripts`
+  - [#6472](https://github.com/facebook/create-react-app/pull/6472) Revert CSS sourcemaps in development. ([@bugzpodder](https://github.com/bugzpodder))
+  - [#6444](https://github.com/facebook/create-react-app/pull/6444) Revert "Switch to eval-source-map (#5060)". ([@ianschmitz](https://github.com/ianschmitz))
+
+#### :nail_care: Enhancement
+
+- `react-dev-utils`, `react-scripts`
+  - [#6406](https://github.com/facebook/create-react-app/pull/6406) Speed up TypeScript rebuild times in development. ([@ianschmitz](https://github.com/ianschmitz))
+- `create-react-app`
+  - [#6253](https://github.com/facebook/create-react-app/pull/6253) Only use `yarn.lock.cached` if using the default Yarn registry. ([@hangryCat](https://github.com/hangryCat))
+- `react-scripts`
+  - [#5457](https://github.com/facebook/create-react-app/pull/5457) Add forward ref to React SVG Component. ([@GasimGasimzada](https://github.com/GasimGasimzada))
+
+#### :memo: Documentation
+
+- `babel-preset-react-app`
+  - [#6254](https://github.com/facebook/create-react-app/pull/6254) Improve Flow and TypeScript usage docs. ([@saranshkataria](https://github.com/saranshkataria))
+- `babel-preset-react-app`, `confusing-browser-globals`, `react-app-polyfill`
+  - [#6419](https://github.com/facebook/create-react-app/pull/6419) Improve language used in markdown code blocks. ([@cherouvim](https://github.com/cherouvim))
+- `create-react-app`
+  - [#6481](https://github.com/facebook/create-react-app/pull/6481) Fix typo. ([@adyouri](https://github.com/adyouri))
+- `react-dev-utils`
+  - [#6482](https://github.com/facebook/create-react-app/pull/6482) Fix typo. ([@mattfwood](https://github.com/mattfwood))
+- Other
+  - [#6438](https://github.com/facebook/create-react-app/pull/6438) Update `source-map-explorer` docs to analyze all chunks. ([@Kamahl19](https://github.com/Kamahl19))
+  - [#6454](https://github.com/facebook/create-react-app/pull/6454) Fix typo. ([@DenrizSusam](https://github.com/DenrizSusam))
+  - [#5767](https://github.com/facebook/create-react-app/pull/5767) Add information about using custom registries in e2e testing #4488. ([@juanpicado](https://github.com/juanpicado))
+- `react-dev-utils`, `react-scripts`
+  - [#6239](https://github.com/facebook/create-react-app/pull/6239) Convert all bit.ly links from http to https. ([@leighhalliday](https://github.com/leighhalliday))
+
+#### :house: Internal
+
+- [#6493](https://github.com/facebook/create-react-app/pull/6493) Remove AppVeyor config files. ([@iansu](https://github.com/iansu))
+- [#6474](https://github.com/facebook/create-react-app/pull/6474) Remove latest Node version from Travis config. ([@iansu](https://github.com/iansu))
+
+#### :hammer: Underlying Tools
+
+- `react-scripts`
+  - [#6387](https://github.com/facebook/create-react-app/pull/6387) Use contenthash instead of chunkhash for better long-term caching. ([@ianschmitz](https://github.com/ianschmitz))
+- Other
+  - [#6365](https://github.com/facebook/create-react-app/pull/6365) Upgrade Docusaurus and enable new features. ([@yangshun](https://github.com/yangshun))
+
+#### Committers: 15
+
+- Abdelhadi Dyouri ([adyouri](https://github.com/adyouri))
+- Bimochan Shrestha ([sbimochan](https://github.com/sbimochan))
+- Deniz Susman ([DenrizSusam](https://github.com/DenrizSusam))
+- Gasim Gasimzada ([GasimGasimzada](https://github.com/GasimGasimzada))
+- Ian Schmitz ([ianschmitz](https://github.com/ianschmitz))
+- Ian Sutherland ([iansu](https://github.com/iansu))
+- Ioannis Cherouvim ([cherouvim](https://github.com/cherouvim))
+- Jack Zhao ([bugzpodder](https://github.com/bugzpodder))
+- Juan Picado @jotadeveloper ([juanpicado](https://github.com/juanpicado))
+- Leigh Halliday ([leighhalliday](https://github.com/leighhalliday))
+- Martin Litvaj ([Kamahl19](https://github.com/Kamahl19))
+- Matt Wood ([mattfwood](https://github.com/mattfwood))
+- Meo H. ([hangryCat](https://github.com/hangryCat))
+- Saransh Kataria ([saranshkataria](https://github.com/saranshkataria))
+- Yangshun Tay ([yangshun](https://github.com/yangshun))
+
+### Migrating from 2.1.5 to 2.1.6
+
+Inside any created project that has not been ejected, run:
+
+```sh
+npm install --save --save-exact react-scripts@2.1.6
+```
+
+or
+
+```sh
+yarn add --exact react-scripts@2.1.6
+```
+
 ## 2.1.5 (February 11, 2019)
 
 v2.1.5 is a maintenance release that reverts the TypeScript speed improvements ([#5903](https://github.com/facebook/create-react-app/pull/5903)) to fix a dependency issue in `react-dev-utils`.

docusaurus/docs/adding-custom-environment-variables.md

@@ -41,13 +41,19 @@ During the build, `process.env.REACT_APP_NOT_SECRET_CODE` will be replaced with
 
 When you load the app in the browser and inspect the `<input>`, you will see its value set to `abcdef`, and the bold text will show the environment provided when using `npm start`:
 
+<!-- prettier-ignore-start -->
+
 ```html
 <div>
   <small>You are running this application in <b>development</b> mode.</small>
-  <form><input type="hidden" value="abcdef" /></form>
+  <form>
+    <input type="hidden" value="abcdef" />
+  </form>
 </div>
 ```
 
+<!-- prettier-ignore-end -->
+
 The above form is looking for a variable called `REACT_APP_NOT_SECRET_CODE` from the environment. In order to consume this value, we need to have it defined in the environment. This can be done using two ways: either in your shell or in a `.env` file. Both of these ways are described in the next few sections.
 
 Having access to the `NODE_ENV` is also useful for performing actions conditionally:

docusaurus/docs/adding-typescript.md

@@ -33,6 +33,9 @@ Type errors will show up in the same console as the build one.
 
 To learn more about TypeScript, check out [its documentation](https://www.typescriptlang.org/).
 
+> **Note:** If your project is not created with TypeScript enabled, npx may be using a cached version of `create-react-app`.
+> Remove previously installed versions with `npm uninstall -g create-react-app` (see [#6119](https://github.com/facebook/create-react-app/issues/6119#issuecomment-451614035)).
+
 > **Note:** You are not required to make a [`tsconfig.json` file](https://www.typescriptlang.org/docs/handbook/tsconfig-json.html), one will be made for you.
 > You are allowed to edit the generated TypeScript configuration.
 

docusaurus/docs/setting-up-your-editor.md

@@ -28,6 +28,19 @@ You would need to install an ESLint plugin for your editor first. Then, add a fi
 }
 ```
 
+If you're using TypeScript and Visual Studio Code, the [ESLint Visual Studio Code extension](https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint#overview) currently [doesn't have TypeScript support enabled by default](https://github.com/Microsoft/vscode-eslint/issues/609). To enable TypeScript support in the ESLint extension, add the following to your project's Visual Studio Code settings file, located at `.vscode/settings.json` (you can create this file if it doesn't already exist):
+
+```json
+{
+  "eslint.validate": [
+    "javascript",
+    "javascriptreact",
+    { "language": "typescript", "autoFix": true },
+    { "language": "typescriptreact", "autoFix": true }
+  ]
+}
+```
+
 Now your editor should report the linting warnings.
 
 Note that even if you edit your `.eslintrc.json` file further, these changes will **only affect the editor integration**. They won’t affect the terminal and in-browser lint output. This is because Create React App intentionally provides a minimal set of rules that find common mistakes.

docusaurus/docs/supported-browsers-features.md

@@ -6,7 +6,7 @@ sidebar_label: Supported Browsers and Features
 
 ## Supported Browsers
 
-By default, the generated project supports all modern browsers. Support for Internet Explorer 9, 10, and 11 requires [polyfills](https://github.com/facebook/create-react-app/blob/master/packages/react-app-polyfill/README.md).
+By default, the generated project supports all modern browsers. Support for Internet Explorer 9, 10, and 11 requires polyfills. For a minimum set of polyfills to support older browsers, use [react-app-polyfill](https://github.com/facebook/create-react-app/blob/master/packages/react-app-polyfill/README.md). To polyfill other language features, see the [Adding Polyfills](#adding-polyfills) section below
 
 ## Supported Language Features
 
@@ -26,3 +26,34 @@ While we recommend using experimental proposals with some caution, Facebook heav
 Note that **this project includes no [polyfills](https://github.com/facebook/create-react-app/blob/master/packages/react-app-polyfill/README.md)** by default.
 
 If you use any other ES6+ features that need **runtime support** (such as `Array.from()` or `Symbol`), make sure you are [including the appropriate polyfills manually](https://github.com/facebook/create-react-app/blob/master/packages/react-app-polyfill/README.md), or that the browsers you are targeting already support them.
+
+## Adding Polyfills
+
+You can install [`@babel/polyfill`](https://babeljs.io/docs/en/babel-polyfill) as a dependency in your application, and import it at the very top of your app's entry point (`src/index.js` or `src/index.tsx`) to emulate a full ES2015+ environment. Your `browerslist` configuration will be used to only include the polyfills necessary by your target browsers.
+
+## Configuring Supported Browsers
+
+By default, the generated project includes a [`browerslist`](https://github.com/browserslist/browserslist) configuration in your `package.json` file to target a broad range of browsers based on global usage (`> 0.2%`) for production builds, and modern browsers for development. This gives a good development experience, especially when using language features such as async/await, but still provides high compatibility with many browsers in production.
+
+The `browserslist` configuration controls the outputted JavaScript so that the emitted code will be compatible with the browsers specified. The `production` list will be used when creating a production build by running the `build` script, and the `development` list will be used when running the `start` script. You can use [https://browserl.ist](https://browserl.ist/?q=%3E+0.2%25%2C+not+dead%2C+not+op_mini+all) to see the browsers supported by your configured `browserslist`.
+
+Here is an example `browserslist` that is specified in `package.json`:
+
+```json
+"browserslist": {
+  "production": [
+    ">0.2%",
+    "not dead",
+    "not op_mini all"
+  ],
+  "development": [
+    "last 1 chrome version",
+    "last 1 firefox version",
+    "last 1 safari version"
+  ]
+}
+```
+
+> Note that this does not include polyfills automatically for you. You will still need to polyfill language features (see above) as needed based on the browsers your are supporting.
+
+> When editing the `browerslist` config, you may notice that your changes don't get picked up right away. This is due to an [issue in babel-loader](https://github.com/babel/babel-loader/issues/690) not detecting the change in your `package.json`. An easy solution is to delete the `node_modules/.cache` folder and try again.

package.json

@@ -19,24 +19,24 @@
     "compile:lockfile": "node tasks/compile-lockfile.js"
   },
   "devDependencies": {
-    "eslint": "5.12.0",
+    "eslint": "5.15.1",
     "execa": "1.0.0",
-    "fs-extra": "^7.0.0",
-    "get-port": "^4.0.0",
-    "globby": "^8.0.1",
-    "husky": "1.0.0-rc.15",
+    "fs-extra": "^7.0.1",
+    "get-port": "^4.2.0",
+    "globby": "^9.1.0",
+    "husky": "^1.3.1",
     "jest": "^23.6.0",
     "lerna": "2.9.1",
-    "lerna-changelog": "^0.7.0",
+    "lerna-changelog": "~0.8.2",
     "lint-staged": "^8.0.4",
     "meow": "^5.0.0",
-    "multimatch": "^2.1.0",
-    "prettier": "1.15.2",
-    "puppeteer": "^1.8.0",
-    "strip-ansi": "^4.0.0",
+    "multimatch": "^3.0.0",
+    "prettier": "1.16.4",
+    "puppeteer": "^1.13.0",
+    "strip-ansi": "^5.1.0",
     "svg-term-cli": "^2.1.1",
     "tempy": "^0.2.1",
-    "wait-for-localhost": "2.0.1"
+    "wait-for-localhost": "^3.1.0"
   },
   "husky": {
     "hooks": {

packages/babel-preset-react-app/create.js

@@ -104,7 +104,7 @@ module.exports = function(api, opts, env) {
           ignoreBrowserslistConfig: true,
           // If users import all core-js they're probably not concerned with
           // bundle size. We shouldn't rely on magic to try and shrink it.
-          useBuiltIns: !isModern || !shouldBuildModern ? false : 'entry',
+          useBuiltIns: 'entry',
           // Do not transform modules to CJS
           modules: false,
           // Exclude transforms that make all code slower
@@ -141,7 +141,26 @@ module.exports = function(api, opts, env) {
       // Necessary to include regardless of the environment because
       // in practice some other transforms (such as object-rest-spread)
       // don't work without it: https://github.com/babel/babel/issues/7215
-      require('@babel/plugin-transform-destructuring').default,
+      [
+        require('@babel/plugin-transform-destructuring').default,
+        {
+          // Use loose mode for performance:
+          // https://github.com/facebook/create-react-app/issues/5602
+          loose: false,
+          selectiveLoose: [
+            'useState',
+            'useEffect',
+            'useContext',
+            'useReducer',
+            'useCallback',
+            'useMemo',
+            'useRef',
+            'useImperativeHandle',
+            'useLayoutEffect',
+            'useDebugValue',
+          ],
+        },
+      ],
       // Turn on legacy decorators for TypeScript files
       isTypeScriptEnabled && [
         require('@babel/plugin-proposal-decorators').default,

packages/babel-preset-react-app/package.json

@@ -1,6 +1,6 @@
 {
   "name": "babel-preset-react-app",
-  "version": "7.0.1",
+  "version": "7.0.2",
   "description": "Babel preset used by Create React App",
   "repository": "facebook/create-react-app",
   "license": "MIT",
@@ -17,21 +17,21 @@
     "test.js"
   ],
   "dependencies": {
-    "@babel/core": "7.2.2",
-    "@babel/plugin-proposal-class-properties": "7.3.0",
+    "@babel/core": "7.3.4",
+    "@babel/plugin-proposal-class-properties": "7.3.4",
     "@babel/plugin-proposal-decorators": "7.3.0",
-    "@babel/plugin-proposal-object-rest-spread": "7.3.2",
+    "@babel/plugin-proposal-object-rest-spread": "7.3.4",
     "@babel/plugin-syntax-dynamic-import": "7.2.0",
-    "@babel/plugin-transform-classes": "7.2.2",
+    "@babel/plugin-transform-classes": "7.3.4",
     "@babel/plugin-transform-destructuring": "7.3.2",
-    "@babel/plugin-transform-flow-strip-types": "7.2.3",
+    "@babel/plugin-transform-flow-strip-types": "7.3.4",
     "@babel/plugin-transform-react-constant-elements": "7.2.0",
     "@babel/plugin-transform-react-display-name": "7.2.0",
-    "@babel/plugin-transform-runtime": "7.2.0",
-    "@babel/preset-env": "7.3.1",
+    "@babel/plugin-transform-runtime": "7.3.4",
+    "@babel/preset-env": "7.3.4",
     "@babel/preset-react": "7.0.0",
-    "@babel/preset-typescript": "7.1.0",
-    "@babel/runtime": "7.3.1",
+    "@babel/preset-typescript": "7.3.3",
+    "@babel/runtime": "7.3.4",
     "babel-loader": "8.0.5",
     "babel-plugin-dynamic-import-node": "2.2.0",
     "babel-plugin-macros": "2.5.0",

packages/confusing-browser-globals/package.json

@@ -1,6 +1,6 @@
 {
   "name": "confusing-browser-globals",
-  "version": "1.0.5",
+  "version": "1.0.6",
   "description": "A list of browser globals that are often used by mistake instead of local variables",
   "license": "MIT",
   "main": "index.js",

packages/create-react-app/createReactApp.js

@@ -136,7 +136,6 @@ if (program.info) {
         npmGlobalPackages: ['create-react-app'],
       },
       {
-        clipboard: false,
         duplicates: true,
         showNotFound: true,
       }

packages/create-react-app/package.json

@@ -1,14 +1,14 @@
 {
   "name": "create-react-app",
-  "version": "2.1.5",
+  "version": "2.1.8",
   "keywords": [
     "react"
   ],
   "description": "Create React apps with no build configuration.",
   "repository": "facebook/create-react-app",
   "license": "MIT",
   "engines": {
-    "node": ">=4"
+    "node": ">=8"
   },
   "bugs": {
     "url": "https://github.com/facebook/create-react-app/issues"
@@ -22,13 +22,13 @@
     "create-react-app": "./index.js"
   },
   "dependencies": {
-    "chalk": "1.1.3",
-    "commander": "2.18.0",
-    "cross-spawn": "4.0.2",
-    "envinfo": "5.11.1",
-    "fs-extra": "5.0.0",
+    "chalk": "2.4.2",
+    "commander": "2.19.0",
+    "cross-spawn": "6.0.5",
+    "envinfo": "7.1.0",
+    "fs-extra": "7.0.1",
     "hyperquest": "2.1.3",
-    "semver": "5.5.1",
+    "semver": "5.6.0",
     "tar-pack": "3.4.1",
     "tmp": "0.0.33",
     "validate-npm-package-name": "3.0.0"