Update from facebook upstream

.github/ISSUE_TEMPLATE/question.md

@@ -4,7 +4,7 @@ about: Get help with Create React App
 labels: 'needs triage'
 ---
 
-If you have a general question about Create React App or about building an app with Create React App we encourage you to post on our Spectrum community instead of this issue tracker. The maintainers and other community members can provide help and answer your questions there: https://spectrum.chat/create-react-app
+If you have a general question about Create React App or about building an app with Create React App we encourage you to post in GitHub Discussions instead of this issue tracker. The maintainers and other community members can provide help and answer your questions there: https://github.com/facebook/create-react-app/discussions
 
 If you're looking for general information on using React, the React docs have a list of resources: https://reactjs.org/community/support.html
 

.prettierrc

@@ -1,4 +1,5 @@
 {
+  "arrowParens": "avoid",
   "trailingComma": "es5",
   "singleQuote": true,
   "semi": true

CHANGELOG-1.x.md

@@ -280,7 +280,7 @@ yarn add --exact react-scripts@1.1.1
   - [#3757](https://github.com/facebook/create-react-app/pull/3757) Try updating Flow. ([@gaearon](https://github.com/gaearon))
   - [#3414](https://github.com/facebook/create-react-app/pull/3414) Export `dismissRuntimeErrors` function. ([@skidding](https://github.com/skidding))
   - [#3036](https://github.com/facebook/create-react-app/pull/3036) Cleaning up `printHostingInstructions` a bit. ([@GreenGremlin](https://github.com/GreenGremlin))
-  - [#3514](https://github.com/facebook/create-react-app/pull/3514) Fix `FileSizeReporter` for multi build Webpack setups. ([@iiska](https://github.com/iiska))
+  - [#3514](https://github.com/facebook/create-react-app/pull/3514) Fix `FileSizeReporter` for multi build webpack setups. ([@iiska](https://github.com/iiska))
   - [#3362](https://github.com/facebook/create-react-app/pull/3362) Refactor extra watch options regex to `react-dev-utils`. ([@xjlim](https://github.com/xjlim))
 
 #### Committers: 47
@@ -1104,7 +1104,7 @@ or
 yarn add --dev --exact react-scripts@1.0.8
 ```
 
-**If you previously used `HTTPS=true` environment variable in development**, make sure you aren't affected by a now-fixed vulnerability in Webpack by [visiting this page](http://badcert.mike.works/). You can read more about the vulnerability [here](https://medium.com/@mikenorth/webpack-preact-cli-vulnerability-961572624c54).
+**If you previously used `HTTPS=true` environment variable in development**, make sure you aren't affected by a now-fixed vulnerability in webpack by [visiting this page](http://badcert.mike.works/). You can read more about the vulnerability [here](https://medium.com/@mikenorth/webpack-preact-cli-vulnerability-961572624c54).
 
 You may optionally then move `react-scripts` from `devDependencies` to `dependencies` since that’s how we’ll structure newly created projects. It is not necessary though.
 
@@ -1724,7 +1724,7 @@ Please [file an issue](https://github.com/facebook/create-react-app/issues/new)
 - `react-dev-utils`
   - [#2125](https://github.com/facebook/create-react-app/pull/2125) Only show the first compilation error. ([@gaearon](https://github.com/gaearon))
   - [#2120](https://github.com/facebook/create-react-app/pull/2120) Omit ESLint warnings when there are ESLint errors. ([@gaearon](https://github.com/gaearon))
-  - [#2113](https://github.com/facebook/create-react-app/pull/2113) Prettify errors and warnings for Webpack 2. ([@gaearon](https://github.com/gaearon))
+  - [#2113](https://github.com/facebook/create-react-app/pull/2113) Prettify errors and warnings for webpack 2. ([@gaearon](https://github.com/gaearon))
   - [#1842](https://github.com/facebook/create-react-app/pull/1842) Modularize and extract crash overlay to iframe. ([@Timer](https://github.com/Timer))
 - `create-react-app`
   - [#1811](https://github.com/facebook/create-react-app/pull/1811) Allow creation of apps in empty Mercurial repos. ([@GreenGremlin](https://github.com/GreenGremlin))
@@ -1770,7 +1770,7 @@ Please [file an issue](https://github.com/facebook/create-react-app/issues/new)
   - [#1736](https://github.com/facebook/create-react-app/pull/1736) Fix eject for linked react-scripts. ([@tuchk4](https://github.com/tuchk4))
   - [#1741](https://github.com/facebook/create-react-app/pull/1741) Fix internal linting setup. ([@gaearon](https://github.com/gaearon))
   - [#1730](https://github.com/facebook/create-react-app/pull/1730) Fix Node 4 e2e tests. ([@Timer](https://github.com/Timer))
-  - [#1715](https://github.com/facebook/create-react-app/pull/1715) Remove unused `url` import in Webpack config. ([@pd4d10](https://github.com/pd4d10))
+  - [#1715](https://github.com/facebook/create-react-app/pull/1715) Remove unused `url` import in webpack config. ([@pd4d10](https://github.com/pd4d10))
   - [#1700](https://github.com/facebook/create-react-app/pull/1700) Update extract-text-webpack-plugin to stable. ([@SimenB](https://github.com/SimenB))
 - `react-dev-utils`, `react-scripts`
   - [#2209](https://github.com/facebook/create-react-app/pull/2209) Move more logic from react-scripts to react-dev-utils. ([@gaearon](https://github.com/gaearon))

CHANGELOG-2.x.md

@@ -827,7 +827,7 @@ You can read more about [these polyfills here](https://github.com/facebook/creat
 
 ### Dynamic `import()` of a CommonJS module now has a `.default` property
 
-[Webpack 4 changed the behavior of `import()`](https://medium.com/webpack/webpack-4-import-and-commonjs-d619d626b655) to be closer in line with the specification.
+[webpack 4 changed the behavior of `import()`](https://medium.com/webpack/webpack-4-import-and-commonjs-d619d626b655) to be closer in line with the specification.
 
 Previously, importing a CommonJS module did not require you specify the default export. In most cases, this is now required.
 If you see errors in your application about `... is not a function`, you likely need to update your dynamic import, e.g.:
@@ -973,7 +973,7 @@ If you used 2.x alphas, please [follow these instructions](https://gist.github.c
 - `react-scripts`
   - [#5218](https://github.com/facebook/create-react-app/pull/5218) Support globalSetup and globalTeardown Jest options ([@gaearon](https://github.com/gaearon))
   - [#5073](https://github.com/facebook/create-react-app/pull/5073) Add user defined proxy via middleware ([@Timer](https://github.com/Timer))
-  - [#3945](https://github.com/facebook/create-react-app/pull/3945) Allow bundles to be analyzed with Webpack-specific tools ([@joshwcomeau](https://github.com/joshwcomeau))
+  - [#3945](https://github.com/facebook/create-react-app/pull/3945) Allow bundles to be analyzed with webpack-specific tools ([@joshwcomeau](https://github.com/joshwcomeau))
   - [#4195](https://github.com/facebook/create-react-app/pull/4195) Sass loader ([@Fabianopb](https://github.com/Fabianopb))
   - [#3909](https://github.com/facebook/create-react-app/pull/3909) Add loader for .graphql files ([@petetnt](https://github.com/petetnt))
   - [#1288](https://github.com/facebook/create-react-app/pull/1288) Create git repository with initial commit ([@mauricedb](https://github.com/mauricedb))
@@ -988,7 +988,7 @@ If you used 2.x alphas, please [follow these instructions](https://gist.github.c
   - [#3865](https://github.com/facebook/create-react-app/pull/3865) Add opt-out for preset-flow to work with @babel/preset-typescript ([@oieduardorabelo](https://github.com/oieduardorabelo))
   - [#3675](https://github.com/facebook/create-react-app/pull/3675) add experimental babel-plugin-macros support ([@kentcdodds](https://github.com/kentcdodds))
 - `babel-preset-react-app`, `confusing-browser-globals`, `eslint-config-react-app`, `react-dev-utils`, `react-error-overlay`, `react-scripts`
-  - [#4077](https://github.com/facebook/create-react-app/pull/4077) Webpack 4 ([@andriijas](https://github.com/andriijas))
+  - [#4077](https://github.com/facebook/create-react-app/pull/4077) webpack 4 ([@andriijas](https://github.com/andriijas))
 - `create-react-app`
   - [#4350](https://github.com/facebook/create-react-app/pull/4350) Support package distribution tags ([@miraage](https://github.com/miraage))
 - `babel-preset-react-app`, `react-scripts`
@@ -1125,7 +1125,7 @@ If you used 2.x alphas, please [follow these instructions](https://gist.github.c
   - [#4846](https://github.com/facebook/create-react-app/pull/4846) Update jest version ([@skoging](https://github.com/skoging))
   - [#4362](https://github.com/facebook/create-react-app/pull/4362) Bumped jest version to 22.4.1 ([@CGreenburg](https://github.com/CGreenburg))
 - `babel-preset-react-app`, `confusing-browser-globals`, `eslint-config-react-app`, `react-dev-utils`, `react-error-overlay`, `react-scripts`
-  - [#4077](https://github.com/facebook/create-react-app/pull/4077) Webpack 4 ([@andriijas](https://github.com/andriijas))
+  - [#4077](https://github.com/facebook/create-react-app/pull/4077) webpack 4 ([@andriijas](https://github.com/andriijas))
 - `babel-preset-react-app`
   - [#4432](https://github.com/facebook/create-react-app/pull/4432) Update babel-plugin-macros to fix a bug ([@stereobooster](https://github.com/stereobooster))
   - [#3818](https://github.com/facebook/create-react-app/pull/3818) Remove PropTypes from production build (#209) ([@iansu](https://github.com/iansu))