Migrate from "master" branch to "main" (#11715)

* Remove dead link

* Use consistent "homepage" url in package.json

* Update md links

* Update comment link in parser d.ts

* Add comment in gitpod config

* Update circleci config

* Update PULL_REQUEST_TEMPLATE

* Update badges

* Trigger CI

* Update 404 link

packages/babel-parser/CHANGELOG.md

@@ -9,11 +9,11 @@
 > - :house:      [Internal]
 > - :nail_care:  [Polish]
 
-> Semver Policy: https://github.com/babel/babel/tree/master/packages/babel-parser#semver
+> Semver Policy: https://github.com/babel/babel/tree/main/packages/babel-parser#semver
 
 _Note: Gaps between patch versions are faulty, broken or test releases._
 
-See the [Babel Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md) for the pre-6.8.0 version Changelog.
+See the [Babel Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md) for the pre-6.8.0 version Changelog.
 
 ## 6.17.1 (2017-05-10)
 

packages/babel-parser/typings/babel-parser.d.ts

@@ -1,5 +1,5 @@
 // Type definitions for @babel/parser
-// Project: https://github.com/babel/babel/tree/master/packages/babel-parser
+// Project: https://github.com/babel/babel/tree/main/packages/babel-parser
 // Definitions by: Troy Gerwien <https://github.com/yortus>
 //                 Marvin Hagemeister <https://github.com/marvinhagemeister>
 //                 Avi Vahl <https://github.com/AviVahl>

packages/babel-plugin-transform-regenerator/package.json

@@ -3,7 +3,7 @@
   "author": "Ben Newman <bn@cs.stanford.edu>",
   "description": "Explode async and generator functions into a state machine.",
   "version": "7.10.1",
-  "homepage": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-regenerator",
+  "homepage": "https://babeljs.io/",
   "repository": {
     "type": "git",
     "url": "https://github.com/babel/babel.git",

packages/babel-preset-env/CONTRIBUTING.md

@@ -2,7 +2,7 @@
 
 ## Adding a new plugin or polyfill to support (when approved in the next ECMAScript version)
 
-### Update [`plugin-features.js`](https://github.com/babel/babel/blob/master/packages/babel-compat-data/scripts/data/plugin-features.js)
+### Update [`plugin-features.js`](https://github.com/babel/babel/blob/main/packages/babel-compat-data/scripts/data/plugin-features.js)
 
 *Example:*
 
@@ -42,7 +42,7 @@ Find the corresponding module on [`core-js@2`](https://github.com/zloirock/core-
 
 `es7.object.values.js`
 
-Find required ES version in [`corejs2-built-in-features.js`](https://github.com/babel/babel/blob/master/packages/babel-preset-env/data/corejs2-built-in-features.js) and add the new feature:
+Find required ES version in [`corejs2-built-in-features.js`](https://github.com/babel/babel/blob/main/packages/babel-preset-env/data/corejs2-built-in-features.js) and add the new feature:
 
 ```js
 const es = {
@@ -51,17 +51,17 @@ const es = {
 }
 ```
 
-If you wan to transform a new built-in by `useBuiltIns: 'usage'`, add mapping to related `core-js` modules to [this file](https://github.com/babel/babel/blob/master/packages/babel-preset-env/polyfills/corejs2/built-in-definitions.js).
+If you wan to transform a new built-in by `useBuiltIns: 'usage'`, add mapping to related `core-js` modules to [this file](https://github.com/babel/babel/blob/main/packages/babel-preset-env/polyfills/corejs2/built-in-definitions.js).
 
 ### Update data for `core-js@3` polyfilling
 
-Just update the version of [`core-js-compat`](https://github.com/zloirock/core-js/tree/master/packages/core-js-compat) in dependencies.
+Just update the version of [`core-js-compat`](https://github.com/zloirock/core-js/tree/main/packages/core-js-compat) in dependencies.
 
-If you wan to transform a new built-in by `useBuiltIns: 'usage'`, add mapping to related [`core-js`](https://github.com/zloirock/core-js/tree/master/packages/core-js/modules) modules to [this file](https://github.com/babel/babel/blob/master/packages/babel-preset-env/polyfills/corejs3/built-in-definitions.js).
+If you wan to transform a new built-in by `useBuiltIns: 'usage'`, add mapping to related [`core-js`](https://github.com/zloirock/core-js/tree/main/packages/core-js/modules) modules to [this file](https://github.com/babel/babel/blob/main/packages/babel-preset-env/polyfills/corejs3/built-in-definitions.js).
 
-If you want to mark a new proposal as shipped, add it to [this list](https://github.com/babel/babel/blob/master/packages/babel-preset-env/polyfills/corejs3/shipped-proposals.js).
+If you want to mark a new proposal as shipped, add it to [this list](https://github.com/babel/babel/blob/main/packages/babel-preset-env/polyfills/corejs3/shipped-proposals.js).
 
-### Update [`plugins.json`](https://github.com/babel/babel/blob/master/packages/babel-preset-env/data/plugins.json)
+### Update [`plugins.json`](https://github.com/babel/babel/blob/main/packages/babel-preset-env/data/plugins.json)
 
 Until `compat-table` is a standalone npm module for data we are using the git commit in `packages/babel-compat-data/scripts/download-compat-table.sh`
 
@@ -72,7 +72,7 @@ So we update and then run `npm run build-data`. If there are no changes, then `p
 ## Tests
 
 ### Running tests
-See general [CONTRIBUTING.md](https://github.com/babel/babel/blob/master/CONTRIBUTING.md#running-lintingtests).
+See general [CONTRIBUTING.md](https://github.com/babel/babel/blob/main/CONTRIBUTING.md#running-lintingtests).
 
 ### Writing tests
 
@@ -80,7 +80,7 @@ See general [CONTRIBUTING.md](https://github.com/babel/babel/blob/master/CONTRIB
 
 All the tests for `@babel/preset-env` exist in the `test/fixtures` folder. The
 test setup and conventions are exactly the same as testing a Babel plugin, so
-please read our [documentation on writing tests](https://github.com/babel/babel/blob/master/CONTRIBUTING.md#babel-plugin-x).
+please read our [documentation on writing tests](https://github.com/babel/babel/blob/main/CONTRIBUTING.md#babel-plugin-x).
 
 #### Testing the `debug` option
 

packages/babel-runtime/package.json

@@ -11,7 +11,7 @@
     "url": "https://github.com/babel/babel.git",
     "directory": "packages/babel-runtime"
   },
-  "homepage": "https://babeljs.io/docs/en/next/babel-runtime",
+  "homepage": "https://babeljs.io/",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "dependencies": {
     "regenerator-runtime": "^0.13.4"

packages/babel-standalone/package.json

@@ -123,7 +123,7 @@
   "bugs": {
     "url": "https://github.com/babel/babel/issues"
   },
-  "homepage": "https://github.com/babel/babel/tree/master/packages/babel-standalone",
+  "homepage": "https://babeljs.io/",
   "repository": {
     "type": "git",
     "url": "https://github.com/babel/babel.git",

packages/babel-traverse/src/path/family.js

@@ -209,7 +209,7 @@ export function getOuterBindingIdentifiers(duplicates?: boolean): Object {
   return t.getOuterBindingIdentifiers(this.node, duplicates);
 }
 
-// original source - https://github.com/babel/babel/blob/master/packages/babel-types/src/retrievers.js
+// original source - https://github.com/babel/babel/blob/main/packages/babel-types/src/retrievers/getBindingIdentifiers.js
 // path.getBindingIdentifiers returns nodes where the following re-implementation
 // returns paths
 export function getBindingIdentifierPaths(