From c649cccc5729f7c3a4043d80348bfa71a9190e27 Mon Sep 17 00:00:00 2001
From: Ioannis Cherouvim <743305+cherouvim@users.noreply.github.com>
Date: Wed, 13 Feb 2019 23:04:02 +0200
Subject: [PATCH 1/2] Improved language used in code blocks.

---
 CHANGELOG-0.x.md                              | 72 +++++++-------
 CHANGELOG-1.x.md                              | 98 +++++++++----------
 CHANGELOG.md                                  | 46 ++++-----
 CONTRIBUTING.md                               |  2 +-
 docusaurus/docs/adding-a-sass-stylesheet.md   |  2 +-
 .../adding-custom-environment-variables.md    |  2 +-
 docusaurus/docs/adding-typescript.md          |  4 +-
 docusaurus/docs/analyzing-the-bundle-size.md  |  2 +-
 docusaurus/docs/debugging-tests.md            |  4 +-
 docusaurus/docs/deployment.md                 |  2 +-
 .../proxying-api-requests-in-development.md   |  4 +-
 docusaurus/docs/running-tests.md              |  6 +-
 docusaurus/docs/using-https-in-development.md |  2 +-
 docusaurus/website/README.md                  |  1 +
 packages/babel-preset-react-app/README.md     |  6 +-
 packages/confusing-browser-globals/README.md  |  2 +-
 packages/react-app-polyfill/README.md         |  4 +-
 17 files changed, 130 insertions(+), 129 deletions(-)

diff --git a/CHANGELOG-0.x.md b/CHANGELOG-0.x.md
index 10893488cd5..2cb14cb3e2e 100644
--- a/CHANGELOG-0.x.md
+++ b/CHANGELOG-0.x.md
@@ -44,7 +44,7 @@
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.9.5
 ```
 
@@ -130,13 +130,13 @@ npm install --save-dev --save-exact react-scripts@0.9.5
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.9.4
 ```
 
 You may also optionally update the global command-line utility for scoped package support:
 
-```
+```sh
 npm install -g create-react-app@1.3.0
 ```
 
@@ -187,13 +187,13 @@ npm install -g create-react-app@1.3.0
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.9.3
 ```
 
 You may also optionally update the global command-line utility for offline Yarn cache support:
 
-```
+```sh
 npm install -g create-react-app@1.2.1
 ```
 
@@ -322,13 +322,13 @@ npm install -g create-react-app@1.2.1
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.9.2
 ```
 
 You may also optionally update the global command-line utility for more efficient installs (thanks [@n3tr](https://github.com/n3tr)):
 
-```
+```sh
 npm install -g create-react-app@1.1.0
 ```
 
@@ -494,7 +494,7 @@ Thanks to [@Timer](https://github.com/timer) for cutting this release.
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.9.0
 ```
 
@@ -519,13 +519,13 @@ Thanks to [@fson](https://github.com/fson) for cutting this release.
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.8.5
 ```
 
 You may also optionally update the global command-line utility:
 
-```
+```sh
 npm install -g create-react-app@1.0.3
 ```
 
@@ -621,13 +621,13 @@ npm install -g create-react-app@1.0.3
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.8.4
 ```
 
 You may also optionally update the global command-line utility:
 
-```
+```sh
 npm install -g create-react-app@1.0.2
 ```
 
@@ -662,13 +662,13 @@ npm install -g create-react-app@1.0.2
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.8.3
 ```
 
 You can optionally update the global CLI too:
 
-```
+```sh
 npm install -g create-react-app@1.0.1
 ```
 
@@ -751,7 +751,7 @@ npm install -g create-react-app@1.0.1
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.8.2
 ```
 
@@ -767,7 +767,7 @@ Thanks to [@fson](https://github.com/fson) for cutting this release.
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.8.1
 ```
 
@@ -917,13 +917,13 @@ Thanks to [@fson](https://github.com/fson) for cutting this release.
 
 You may optionally update the global command (it’s not required, but it adds Yarn support for new projects):
 
-```
+```sh
 npm install -g create-react-app@1.0.0
 ```
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.8.0
 ```
 
@@ -969,13 +969,13 @@ Thanks to [@fson](https://github.com/fson) for cutting this release.
 
 You may optionally update the global command (it’s not required):
 
-```
+```sh
 npm install -g create-react-app@0.6.0
 ```
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.7.0
 ```
 
@@ -984,7 +984,7 @@ npm install --save-dev --save-exact react-scripts@0.7.0
 #### Updating Snapshots
 
 Jest 16 includes [improvements to snapshot testing and changes to the snapshot format](https://facebook.github.io/jest/blog/2016/10/03/jest-16.html#snapshot-updates). If your project uses snapshot testing, you'll need to update the snapshot files. To update the snapshots, run:
-```
+```sh
 npm test -- -u
 ```
 
@@ -1002,7 +1002,7 @@ npm test -- -u
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.6.1
 ```
 
@@ -1020,7 +1020,7 @@ npm install --save-dev --save-exact react-scripts@0.6.1
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.6.0
 ```
 
@@ -1040,7 +1040,7 @@ npm install --save-dev --save-exact react-scripts@0.6.0
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.5.1
 ```
 
@@ -1077,7 +1077,7 @@ npm install --save-dev --save-exact react-scripts@0.5.1
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.5.0
 ```
 
@@ -1095,7 +1095,7 @@ You can no longer reference any files from `./src` in `index.html`. Instead, `pu
 
 For example, instead of:
 
-```js
+```html
 <link rel="shortcut icon" href="./src/favicon.ico">
 ```
 
@@ -1120,7 +1120,7 @@ It contained no changes to the code.
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.4.3
 ```
 
@@ -1153,13 +1153,13 @@ npm install --save-dev --save-exact react-scripts@0.4.3
 
 You may optionally update the global command (it’s not required):
 
-```
+```sh
 npm install -g create-react-app@0.4.2
 ```
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.4.2
 ```
 
@@ -1174,7 +1174,7 @@ npm install --save-dev --save-exact react-scripts@0.4.2
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.4.1
 ```
 
@@ -1191,7 +1191,7 @@ npm install --save-dev --save-exact react-scripts@0.4.1
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.4.0
 ```
 
@@ -1215,7 +1215,7 @@ If you referenced some other files from `index.html`, please file an issue to di
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.3.1
 ```
 
@@ -1239,13 +1239,13 @@ npm install --save-dev --save-exact react-scripts@0.3.1
 
 You may optionally update the global command (it’s not required):
 
-```
+```sh
 npm install -g create-react-app@0.3.0
 ```
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.3.0
 ```
 
@@ -1357,13 +1357,13 @@ Newly created projects will use `0.2.1` automatically. You **don’t** need to u
 
 You may optionally update the global command (it’s not required):
 
-```
+```sh
 npm install -g create-react-app@0.2.0
 ```
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@0.2.0
 ```
 
diff --git a/CHANGELOG-1.x.md b/CHANGELOG-1.x.md
index 144699233cb..ae2725af297 100644
--- a/CHANGELOG-1.x.md
+++ b/CHANGELOG-1.x.md
@@ -21,13 +21,13 @@
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.1.5
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.1.5
 ```
 
@@ -47,13 +47,13 @@ yarn add --exact react-scripts@1.1.5
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.1.4
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.1.4
 ```
 
@@ -73,13 +73,13 @@ yarn add --exact react-scripts@1.1.4
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.1.3
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.1.3
 ```
 
@@ -106,13 +106,13 @@ yarn add --exact react-scripts@1.1.3
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.1.2
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.1.2
 ```
 
@@ -151,13 +151,13 @@ yarn add --exact react-scripts@1.1.2
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.1.1
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.1.1
 ```
 
@@ -337,13 +337,13 @@ yarn add --exact react-scripts@1.1.1
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.1.0
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.1.0
 ```
 
@@ -372,13 +372,13 @@ yarn add --exact react-scripts@1.1.0
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.0.17
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.0.17
 ```
 
@@ -403,13 +403,13 @@ yarn add --exact react-scripts@1.0.17
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.0.16
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.0.16
 ```
 
@@ -519,13 +519,13 @@ yarn add --exact react-scripts@1.0.16
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.0.15
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.0.15
 ```
 
@@ -604,13 +604,13 @@ yarn add --exact react-scripts@1.0.15
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.0.14
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.0.14
 ```
 
@@ -653,13 +653,13 @@ yarn add --exact react-scripts@1.0.14
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.0.13
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.0.13
 ```
 
@@ -718,13 +718,13 @@ yarn add --exact react-scripts@1.0.13
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.0.12
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.0.12
 ```
 
@@ -841,13 +841,13 @@ yarn add --exact react-scripts@1.0.12
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.0.11
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.0.11
 ```
 
@@ -880,13 +880,13 @@ yarn add --exact react-scripts@1.0.11
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.0.10
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.0.10
 ```
 
@@ -925,13 +925,13 @@ yarn add --exact react-scripts@1.0.10
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save --save-exact react-scripts@1.0.9
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@1.0.9
 ```
 
@@ -1094,13 +1094,13 @@ yarn add --exact react-scripts@1.0.9
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@1.0.8
 ```
 
 or
 
-```
+```sh
 yarn add --dev --exact react-scripts@1.0.8
 ```
 
@@ -1153,13 +1153,13 @@ If you haven't changed the default CSS organization, you may want to apply [this
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@1.0.7
 ```
 
 or
 
-```
+```sh
 yarn add --dev --exact react-scripts@1.0.7
 ```
 
@@ -1198,13 +1198,13 @@ yarn add --dev --exact react-scripts@1.0.7
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@1.0.6
 ```
 
 or
 
-```
+```sh
 yarn add --dev --exact react-scripts@1.0.6
 ```
 
@@ -1241,13 +1241,13 @@ yarn add --dev --exact react-scripts@1.0.6
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@1.0.5
 ```
 
 or
 
-```
+```sh
 yarn add --dev --exact react-scripts@1.0.5
 ```
 
@@ -1262,13 +1262,13 @@ yarn add --dev --exact react-scripts@1.0.5
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@1.0.4
 ```
 
 or
 
-```
+```sh
 yarn add --dev --exact react-scripts@1.0.4
 ```
 
@@ -1302,13 +1302,13 @@ yarn add --dev --exact react-scripts@1.0.4
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@1.0.3
 ```
 
 or
 
-```
+```sh
 yarn add --dev --exact react-scripts@1.0.3
 ```
 
@@ -1355,13 +1355,13 @@ yarn add --dev --exact react-scripts@1.0.3
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@1.0.2
 ```
 
 or
 
-```
+```sh
 yarn add --dev --exact react-scripts@1.0.2
 ```
 
@@ -1431,13 +1431,13 @@ If you previously had issues with an `Invalid Host Header` error, [follow these
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@1.0.1
 ```
 
 or
 
-```
+```sh
 yarn add --dev --exact react-scripts@1.0.1
 ```
 
@@ -1456,13 +1456,13 @@ First, ensure you are using the latest [Node 6 LTS or newer](https://nodejs.org/
 
 Inside any created project that has not been ejected, run:
 
-```
+```sh
 npm install --save-dev --save-exact react-scripts@1.0.0
 ```
 
 You may also optionally update the global command-line utility for bug fixes:
 
-```
+```sh
 npm install -g create-react-app
 ```
 
@@ -1473,7 +1473,7 @@ We also never explicitly forbid doing so, which caused confusion when things did
 
 When running or building your application, you may see a message like so:
 
-```
+```sh
 You attempted to import ... which falls outside of the project src/ directory.
 ```
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index dacfcdd7762..48bcaf53274 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,13 +6,13 @@ v2.1.5 is a maintenance release that reverts the TypeScript speed improvements (
 
 Inside any created project that has not been ejected, run:
 
-```bash
+```sh
 npm install --save --save-exact react-scripts@2.1.5
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@2.1.5
 ```
 
@@ -120,13 +120,13 @@ v2.1.4 is a maintenance release that brings a number of awesome improvements. A
 
 Inside any created project that has not been ejected, run:
 
-```bash
+```sh
 npm install --save --save-exact react-scripts@2.1.4
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@2.1.4
 ```
 
@@ -170,13 +170,13 @@ v2.1.3 is a maintenance release to fix a [vulnerability in webpack-dev-server](h
 
 Inside any created project that has not been ejected, run:
 
-```bash
+```sh
 npm install --save --save-exact react-scripts@2.1.3
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@2.1.3
 ```
 
@@ -309,13 +309,13 @@ v2.1.2 is a maintenance release including various bug fixes.
 
 Inside any created project that has not been ejected, run:
 
-```bash
+```sh
 npm install --save --save-exact react-scripts@2.1.2
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@2.1.2
 ```
 
@@ -365,13 +365,13 @@ Happy Halloween 🎃 👻! This spooky release brings a treat: decorator support
 
 Inside any created project that has not been ejected, run:
 
-```bash
+```sh
 npm install --save --save-exact react-scripts@2.1.1
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@2.1.1
 ```
 
@@ -381,7 +381,7 @@ Create React App 2.1 adds support for TypeScript! Read [the documentation](https
 
 New applications can be created using TypeScript by running:
 
-```bash
+```sh
 $ npx create-react-app my-app --typescript
 ```
 
@@ -468,13 +468,13 @@ $ npx create-react-app my-app --typescript
 
 Inside any created project that has not been ejected, run:
 
-```bash
+```sh
 npm install --save --save-exact react-scripts@2.1.0
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@2.1.0
 ```
 
@@ -567,13 +567,13 @@ yarn add --exact react-scripts@2.1.0
 
 Inside any created project that has not been ejected, run:
 
-```bash
+```sh
 npm install --save --save-exact react-scripts@2.0.5
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@2.0.5
 ```
 
@@ -633,13 +633,13 @@ yarn add --exact react-scripts@2.0.5
 
 Inside any created project that has not been ejected, run:
 
-```bash
+```sh
 npm install --save --save-exact react-scripts@2.0.4
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@2.0.4
 ```
 
@@ -656,13 +656,13 @@ It provides a high-level overview of new features and improvements. Now let's se
 
 Inside any created project that has not been ejected, run:
 
-```bash
+```sh
 npm install --save --save-exact react-scripts@2.0.3
 ```
 
 or
 
-```
+```sh
 yarn add --exact react-scripts@2.0.3
 ```
 
@@ -682,13 +682,13 @@ We have dropped default support for Internet Explorer 9, 10, and 11. If you stil
 
 First, install `react-app-polyfill`:
 
-```bash
+```sh
 npm install react-app-polyfill
 ```
 
 or
 
-```
+```sh
 yarn add react-app-polyfill
 ```
 
@@ -774,13 +774,13 @@ If your `proxy` is an object, that means you are using the advanced proxy config
 
 First, install `http-proxy-middleware` using npm or Yarn:
 
-```bash
+```sh
 npm install http-proxy-middleware
 ```
 
 or
 
-```
+```sh
 yarn add http-proxy-middleware
 ```
 
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index d40d33e33fb..8a8f8f85028 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -94,7 +94,7 @@ Once it is done, you can modify any file locally and run `yarn start`, `yarn tes
 
 If you want to try out the end-to-end flow with the global CLI, you can do this too:
 
-```
+```sh
 yarn create-react-app my-app
 cd my-app
 ```
diff --git a/docusaurus/docs/adding-a-sass-stylesheet.md b/docusaurus/docs/adding-a-sass-stylesheet.md
index 90d3012eb1a..533f798accb 100644
--- a/docusaurus/docs/adding-a-sass-stylesheet.md
+++ b/docusaurus/docs/adding-a-sass-stylesheet.md
@@ -12,7 +12,7 @@ Following this rule often makes CSS preprocessors less useful, as features like
 
 To use Sass, first install `node-sass`:
 
-```bash
+```sh
 $ npm install node-sass --save
 $ # or
 $ yarn add node-sass
diff --git a/docusaurus/docs/adding-custom-environment-variables.md b/docusaurus/docs/adding-custom-environment-variables.md
index 557542fa86d..b4df594ca7f 100644
--- a/docusaurus/docs/adding-custom-environment-variables.md
+++ b/docusaurus/docs/adding-custom-environment-variables.md
@@ -95,7 +95,7 @@ set "REACT_APP_NOT_SECRET_CODE=abcdef" && npm start
 
 ### Linux, macOS (Bash)
 
-```bash
+```sh
 REACT_APP_NOT_SECRET_CODE=abcdef npm start
 ```
 
diff --git a/docusaurus/docs/adding-typescript.md b/docusaurus/docs/adding-typescript.md
index d67cee32b8c..70bc4d20820 100644
--- a/docusaurus/docs/adding-typescript.md
+++ b/docusaurus/docs/adding-typescript.md
@@ -9,7 +9,7 @@ title: Adding TypeScript
 
 To start a new Create React App project with [TypeScript](https://www.typescriptlang.org/), you can run:
 
-```bash
+```sh
 npx create-react-app my-app --typescript
 
 # or
@@ -19,7 +19,7 @@ yarn create react-app my-app --typescript
 
 To add [TypeScript](https://www.typescriptlang.org/) to a Create React App project, first install it:
 
-```bash
+```sh
 npm install --save typescript @types/node @types/react @types/react-dom @types/jest
 
 # or
diff --git a/docusaurus/docs/analyzing-the-bundle-size.md b/docusaurus/docs/analyzing-the-bundle-size.md
index ce175e085d6..ce258af7b4b 100644
--- a/docusaurus/docs/analyzing-the-bundle-size.md
+++ b/docusaurus/docs/analyzing-the-bundle-size.md
@@ -33,7 +33,7 @@ Then in `package.json`, add the following line to `scripts`:
 Then to analyze the bundle run the production build then run the analyze
 script.
 
-```
+```sh
 npm run build
 npm run analyze
 ```
diff --git a/docusaurus/docs/debugging-tests.md b/docusaurus/docs/debugging-tests.md
index 80ca856cf33..60cef1f5e71 100644
--- a/docusaurus/docs/debugging-tests.md
+++ b/docusaurus/docs/debugging-tests.md
@@ -20,7 +20,7 @@ Add the following to the `scripts` section in your project's `package.json`
 
 Place `debugger;` statements in any test and run:
 
-```bash
+```sh
 $ npm run test:debug
 ```
 
@@ -42,7 +42,7 @@ Debugging Jest tests is supported out of the box for [Visual Studio Code](https:
 
 Use the following [`launch.json`](https://code.visualstudio.com/docs/editor/debugging#_launch-configurations) configuration file:
 
-```
+```json
 {
   "version": "0.2.0",
   "configurations": [
diff --git a/docusaurus/docs/deployment.md b/docusaurus/docs/deployment.md
index cca02624135..7260b6006de 100644
--- a/docusaurus/docs/deployment.md
+++ b/docusaurus/docs/deployment.md
@@ -209,7 +209,7 @@ Then run the `firebase init` command from your project’s root. You need to cho
 
 IMPORTANT: you need to set proper HTTP caching headers for `service-worker.js` file in `firebase.json` file or you will not be able to see changes after first deployment ([issue #2440](https://github.com/facebook/create-react-app/issues/2440)). It should be added inside `"hosting"` key like next:
 
-```
+```json
 {
   "hosting": {
     ...
diff --git a/docusaurus/docs/proxying-api-requests-in-development.md b/docusaurus/docs/proxying-api-requests-in-development.md
index d429ac0299f..a113f4d4211 100644
--- a/docusaurus/docs/proxying-api-requests-in-development.md
+++ b/docusaurus/docs/proxying-api-requests-in-development.md
@@ -17,7 +17,7 @@ Such setup is **not** required. However, if you **do** have a setup like this, i
 
 To tell the development server to proxy any unknown requests to your API server in development, add a `proxy` field to your `package.json`, for example:
 
-```js
+```json
   "proxy": "http://localhost:4000",
 ```
 
@@ -74,7 +74,7 @@ You can use this feature in conjunction with the `proxy` property in `package.js
 
 First, install `http-proxy-middleware` using npm or Yarn:
 
-```bash
+```sh
 $ npm install http-proxy-middleware --save
 $ # or
 $ yarn add http-proxy-middleware
diff --git a/docusaurus/docs/running-tests.md b/docusaurus/docs/running-tests.md
index 0a855d4869b..4a1d7fc06e5 100644
--- a/docusaurus/docs/running-tests.md
+++ b/docusaurus/docs/running-tests.md
@@ -321,7 +321,7 @@ Popular CI servers already set the environment variable `CI` by default but you
 1. Following the [Travis Getting started](https://docs.travis-ci.com/user/getting-started/) guide for syncing your GitHub repository with Travis. You may need to initialize some settings manually in your [profile](https://travis-ci.org/profile) page.
 1. Add a `.travis.yml` file to your git repository.
 
-```
+```yaml
 language: node_js
 node_js:
   - 8
@@ -366,11 +366,11 @@ set CI=true&&npm run build
 
 #### Linux, macOS (Bash)
 
-```bash
+```sh
 CI=true npm test
 ```
 
-```bash
+```sh
 CI=true npm run build
 ```
 
diff --git a/docusaurus/docs/using-https-in-development.md b/docusaurus/docs/using-https-in-development.md
index 207087153d8..4dbb2536d70 100644
--- a/docusaurus/docs/using-https-in-development.md
+++ b/docusaurus/docs/using-https-in-development.md
@@ -26,7 +26,7 @@ set HTTPS=true&&npm start
 
 ### Linux, macOS (Bash)
 
-```bash
+```sh
 HTTPS=true npm start
 ```
 
diff --git a/docusaurus/website/README.md b/docusaurus/website/README.md
index 13b5047f3bb..3a0220babfe 100644
--- a/docusaurus/website/README.md
+++ b/docusaurus/website/README.md
@@ -16,6 +16,7 @@ This website was created with [Docusaurus](https://docusaurus.io/).
 # Install dependencies
 $ yarn
 ```
+
 2. Run your dev server:
 
 ```sh
diff --git a/packages/babel-preset-react-app/README.md b/packages/babel-preset-react-app/README.md
index ea8eb3e434d..a3714764379 100644
--- a/packages/babel-preset-react-app/README.md
+++ b/packages/babel-preset-react-app/README.md
@@ -24,7 +24,7 @@ npm install babel-preset-react-app --save-dev
 
 Then create a file named `.babelrc` with following contents in the root folder of your project:
 
-```js
+```json
 {
   "presets": ["react-app"]
 }
@@ -36,7 +36,7 @@ This preset uses the `useBuiltIns` option with [transform-object-rest-spread](ht
 
 Flow is enabled by default. Make sure you have a `.flowconfig` file at the root directory. You can also use the `flow` option on `.babelrc`:
 
-```
+```json
 {
   "presets": [["react-app", { "flow": true, "typescript": false }]]
 }
@@ -46,7 +46,7 @@ Flow is enabled by default. Make sure you have a `.flowconfig` file at the root
 
 TypeScript is enabled by default. Make sure you have a `tsconfig.json` file at the root directory. You can also use the `typescript` option on `.babelrc`:
 
-```
+```json
 {
   "presets": [["react-app", { "flow": false, "typescript": true }]]
 }
diff --git a/packages/confusing-browser-globals/README.md b/packages/confusing-browser-globals/README.md
index 41d4540ad3d..fcc1b64635b 100644
--- a/packages/confusing-browser-globals/README.md
+++ b/packages/confusing-browser-globals/README.md
@@ -20,7 +20,7 @@ This package exports a list of globals that are often used by mistake. You can f
 
 ## Installation
 
-```
+```sh
 npm install --save confusing-browser-globals
 ```
 
diff --git a/packages/react-app-polyfill/README.md b/packages/react-app-polyfill/README.md
index 52c299f24fe..74972b2d338 100644
--- a/packages/react-app-polyfill/README.md
+++ b/packages/react-app-polyfill/README.md
@@ -19,13 +19,13 @@ Each polyfill ensures the following language features are present:
 
 First, install the package using Yarn or npm:
 
-```bash
+```sh
 npm install react-app-polyfill
 ```
 
 or
 
-```bash
+```sh
 yarn add react-app-polyfill
 ```
 

From cd8d5a540d5501638f2d7efca0fd39c2ccd5848b Mon Sep 17 00:00:00 2001
From: Ioannis Cherouvim <743305+cherouvim@users.noreply.github.com>
Date: Thu, 21 Feb 2019 20:24:12 +0200
Subject: [PATCH 2/2] Reverted whitespace

---
 docusaurus/website/README.md | 1 -
 1 file changed, 1 deletion(-)

diff --git a/docusaurus/website/README.md b/docusaurus/website/README.md
index 3a0220babfe..13b5047f3bb 100644
--- a/docusaurus/website/README.md
+++ b/docusaurus/website/README.md
@@ -16,7 +16,6 @@ This website was created with [Docusaurus](https://docusaurus.io/).
 # Install dependencies
 $ yarn
 ```
-
 2. Run your dev server:
 
 ```sh