Prepare to rename the master branch to main.

Author: iclanton

README.md

@@ -3,7 +3,7 @@
 <p align="center"><a href="https://rushstack.io/">https://rushstack.io/</a></p>
 </td></tr></table>
 
-[![Zulip chat room](https://img.shields.io/badge/zulip-join_chat-brightgreen.svg)](https://rushstack.zulipchat.com/) &nbsp; [![Build Status](https://dev.azure.com/RushStack/GitHubProjects/_apis/build/status/rushstack/rushstack%20CI%20Build?branchName=master)](https://dev.azure.com/RushStack/GitHubProjects/_build/latest?definitionId=3&branchName=master)
+[![Zulip chat room](https://img.shields.io/badge/zulip-join_chat-brightgreen.svg)](https://rushstack.zulipchat.com/) &nbsp; [![Build Status](https://dev.azure.com/RushStack/GitHubProjects/_apis/build/status/rushstack/rushstack%20CI%20Build?branchName=main)](https://dev.azure.com/RushStack/GitHubProjects/_build/latest?definitionId=3&branchName=main)
 
 The home for various projects maintained by the Rush Stack community, whose mission is to develop reusable tooling
 for large scale TypeScript monorepos.

apps/api-documenter/README.md

@@ -12,7 +12,7 @@ documentation.
 ## Links
 
 - [CHANGELOG.md](
-  https://github.com/microsoft/rushstack/blob/master/apps/api-documenter/CHANGELOG.md) - Find
+  https://github.com/microsoft/rushstack/blob/main/apps/api-documenter/CHANGELOG.md) - Find
   out what's new in the latest version
 - [API Reference](https://rushstack.io/pages/api/api-documenter/)
 

apps/api-extractor/README.md

@@ -1,7 +1,7 @@
 # @microsoft/api-extractor
 
 
-![API Extractor](https://github.com/microsoft/rushstack/raw/master/common/wiki-images/api-extractor-title.png?raw=true)
+![API Extractor](https://github.com/microsoft/rushstack/raw/main/common/wiki-images/api-extractor-title.png?raw=true)
 <br />
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; https://api-extractor.com/
 
@@ -44,7 +44,7 @@ For more details and support resources, please visit: https://api-extractor.com/
 ## Links
 
 - [CHANGELOG.md](
-  https://github.com/microsoft/rushstack/blob/master/apps/api-extractor/CHANGELOG.md) - Find
+  https://github.com/microsoft/rushstack/blob/main/apps/api-extractor/CHANGELOG.md) - Find
   out what's new in the latest version
 - [API Reference](https://rushstack.io/pages/api/api-extractor/)
 

apps/heft/README.md

@@ -79,10 +79,10 @@ the Rush Stack website.
 ## Links
 
 - [CHANGELOG.md](
-  https://github.com/microsoft/rushstack/blob/master/apps/heft/CHANGELOG.md) - Find
+  https://github.com/microsoft/rushstack/blob/main/apps/heft/CHANGELOG.md) - Find
   out what's new in the latest version
 - [UPGRADING.md](
-  https://github.com/microsoft/rushstack/blob/master/apps/heft/UPGRADING.md) - Instructions
+  https://github.com/microsoft/rushstack/blob/main/apps/heft/UPGRADING.md) - Instructions
   for migrating existing projects to use a newer version of Heft
 - [API Reference](https://rushstack.io/pages/api/heft/)
 

apps/heft/src/pluginFramework/logging/FileError.ts

@@ -36,7 +36,7 @@ export class FileError extends Error {
     this.column = column;
 
     // Manually set the prototype, as we can no longer extend built-in classes like Error, Array, Map, etc.
-    // https://github.com/microsoft/TypeScript-wiki/blob/master/Breaking-Changes.md#extending-built-ins-like-error-array-and-map-may-no-longer-work
+    // https://github.com/microsoft/TypeScript-wiki/blob/main/Breaking-Changes.md#extending-built-ins-like-error-array-and-map-may-no-longer-work
     //
     // Note: the prototype must also be set on any classes which extend this one
     (this as any).__proto__ = FileError.prototype; // eslint-disable-line @typescript-eslint/no-explicit-any

apps/rundown/README.md

@@ -224,7 +224,7 @@ Optional arguments:
 ## Links
 
 - [CHANGELOG.md](
-  https://github.com/microsoft/rushstack/blob/master/apps/rundown/CHANGELOG.md) - Find
+  https://github.com/microsoft/rushstack/blob/main/apps/rundown/CHANGELOG.md) - Find
   out what's new in the latest version
 
 Rundown is part of the [Rush Stack](https://rushstack.io/) family of projects.

apps/rush/README.md

@@ -1,7 +1,7 @@
 # @microsoft/rush
 
 
-![rush](https://github.com/microsoft/rushstack/blob/master/common/wiki-images/rush-logo.png?raw=true)
+![rush](https://github.com/microsoft/rushstack/blob/main/common/wiki-images/rush-logo.png?raw=true)
 <br />
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; https://rushjs.io
 
@@ -25,7 +25,7 @@
 
 - **Bulk publishing:** When it's time to do a release, Rush can detect which packages have changes, automatically bump all the appropriate version numbers, and run `npm publish` in each folder.  If you like, configure your server to automatically run `rush publish` every hour.
 
-- **Changelog tracking:** Whenever a PR is created, you can require developers to provide a major/minor/patch log entry for the affected projects.  During publishing, these changes will be automatically aggregated into a nicely formatted [CHANGELOG.md](https://github.com/microsoft/rushstack/blob/master/libraries/node-core-library/CHANGELOG.md) file.
+- **Changelog tracking:** Whenever a PR is created, you can require developers to provide a major/minor/patch log entry for the affected projects.  During publishing, these changes will be automatically aggregated into a nicely formatted [CHANGELOG.md](https://github.com/microsoft/rushstack/blob/main/libraries/node-core-library/CHANGELOG.md) file.
 
 - **Enterprise policies:** Want to review new libraries before developers add them to package.json, but avoid hassling people about already approved cases?  Want to enforce that all your projects depend on the same library version numbers?  Are unprofessional personal e-mail addresses accidentally showing up in your company's Git history?  Rush can help maintain a consistent ecosystem when you've got many developers and many projects in the mix.
 
@@ -67,10 +67,10 @@ For more details and support resources, please visit: https://rushjs.io
 ## Links
 
 - [CHANGELOG.md](
-  https://github.com/microsoft/rushstack/blob/master/apps/rush/CHANGELOG.md) - Find
+  https://github.com/microsoft/rushstack/blob/main/apps/rush/CHANGELOG.md) - Find
   out what's new in the latest version
 - [UPGRADING.md](
-  https://github.com/microsoft/rushstack/blob/master/apps/rush/UPGRADING.md) - Instructions
+  https://github.com/microsoft/rushstack/blob/main/apps/rush/UPGRADING.md) - Instructions
   for migrating existing projects to use a newer version of Rush
 - [API Reference](https://api.rushstack.io/pages/rush-lib/)
 

common/config/rush/command-line.json

@@ -116,7 +116,7 @@
     //    *
     //    * Thus, warnings do not interfere with local development, but they will cause a CI job to fail, because
     //    * the Rush process itself returns a nonzero exit code if there are any warnings or errors. This is by design.
-    //    * In an active monorepo, we've found that if you allow any warnings in your master branch, it inadvertently
+    //    * In an active monorepo, we've found that if you allow any warnings in your main branch, it inadvertently
     //    * teaches developers to ignore warnings, which quickly leads to a situation where so many "expected" warnings
     //    * have accumulated that warnings no longer serve any useful purpose.
     //    *

eslint/eslint-config/README.md

@@ -44,7 +44,7 @@ designed around the the requirements of large teams and projects.
 - **Explicit:**  The ruleset does not import any "recommended" templates from other ESLint packages.  This avoids
   worrying about precedence issues due to import order.  It also eliminates confusion caused by files
   overriding/undoing settings from another file.  Each rule is configured once, in one
-  [easy-to-read file](https://github.com/microsoft/rushstack/blob/master/stack/eslint-config/profile/_common.js).
+  [easy-to-read file](https://github.com/microsoft/rushstack/blob/main/stack/eslint-config/profile/_common.js).
 
 - **Minimal configuration:**  To use this ruleset, your **.eslintrc.js** will need to choose one **"profile"**
   and possibly one or two **"mixins"** that cover special cases.  Beyond that, our goal is to reduce monorepo
@@ -268,7 +268,7 @@ module.exports = {
 ## Links
 
 - [CHANGELOG.md](
-  https://github.com/microsoft/rushstack/blob/master/stack/eslint-config/CHANGELOG.md) - Find
+  https://github.com/microsoft/rushstack/blob/main/stack/eslint-config/CHANGELOG.md) - Find
   out what's new in the latest version
 
 `@rushstack/eslint-config` is part of the [Rush Stack](https://rushstack.io/) family of projects.

eslint/eslint-config/profile/_common.js

@@ -204,7 +204,7 @@ function buildRules(profile) {
           // - @typescript-eslint/interface-name-prefix
           // - @typescript-eslint/member-naming
           //
-          // Docs: https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/naming-convention.md
+          // Docs: https://github.com/typescript-eslint/typescript-eslint/blob/main/packages/eslint-plugin/docs/rules/naming-convention.md
           '@typescript-eslint/naming-convention': [
             'warn',
             ...macros.expandNamingConventionSelectors([