Convert repo to use Yarn 3 for package management

.github/workflows/test.yaml

@@ -1,43 +1,86 @@
-name: Tests
-
-on:
-  push:
-    branches: [master]
-  pull_request:
-    branches: [master]
+name: CI
+on: [push, pull_request]
 
 jobs:
+  changes:
+    name: Check for changes
+    runs-on: ubuntu-latest
+    outputs:
+      toolkit: ${{ steps.filter.outputs.toolkit }}
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dorny/paths-filter@v2
+        id: filter
+        with:
+          filters: |
+            src:
+              - 'src/**'
+
   build:
-    name: Test Suite
+    needs: changes
+    #if: ${{ needs.changes.outputs.src == 'true' }}
+
+    name: Lint, Test, Build & Pack on Node ${{ matrix.node }}
+
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: ['16.x']
 
     steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
+      - name: Checkout repo
+        uses: actions/checkout@v2
 
-      - name: Set up Node
-        uses: actions/setup-node@v3
+      - name: Use node ${{ matrix.node }}
+        uses: actions/setup-node@v2
         with:
-          node-version: 16.x
-          cache: 'npm'
+          node-version: ${{ matrix.node }}
+          cache: 'yarn'
 
-      - name: Install dependencies
-        run: npm ci
+      - name: Install deps
+        run: yarn install
 
-      - name: Check types
-        run: npm run check-types
+      - name: Pack
+        run: yarn pack
 
-      - name: Check formatting
-        run: npm run format:check
+      - uses: actions/upload-artifact@v2
+        with:
+          name: package
+          path: ./package.tgz
 
-      - name: Lint code
-        run: npm run lint
+  test-dist:
+    name: Test against dist
+    needs: [build]
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        node: ['16.x']
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+
+      - name: Use node ${{ matrix.node }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node }}
+          cache: 'yarn'
+
+      - name: Install deps
+        run: yarn install
+
+      - uses: actions/download-artifact@v2
+        with:
+          name: package
+          path: .
 
-      - name: Run test suite
-        run: npm test
+      - run: ls -lah
 
-      - name: Check build
-        run: npm run build
+      - name: Install build artifact
+        run: yarn  add ./package.tgz
+
+      - name: Run tests, against dist
+        run: yarn test
 
   test-types:
     name: Test Types with TypeScript ${{ matrix.ts }}
@@ -57,16 +100,24 @@ jobs:
         uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node }}
-          cache: 'npm'
+          cache: 'yarn'
 
-      - name: Install dependencies
-        run: npm ci
+      - name: Install deps
+        run: yarn install
 
       - name: Install TypeScript ${{ matrix.ts }}
-        run: npm i --save-dev typescript@${{ matrix.ts }}
+        run: yarn add typescript@${{ matrix.ts }}
+
+      - uses: actions/download-artifact@v2
+        with:
+          name: package
+          path: .
+
+      - name: Install build artifact
+        run: yarn add ./package.tgz
 
       - name: Test types
         run: |
-          npm run tsc -- --version
-          npm run check-types
-          npm run test:types
+          yarn tsc --version
+          yarn check-types
+          yarn test:types

.gitignore

@@ -7,6 +7,26 @@ lib
 es
 types
 
+# Yarn
+.cache
+.yarnrc
+.yarn/cache/
+.yarn/*
+!.yarn/patches
+!.yarn/releases
+!.yarn/plugins
+!.yarn/sdks
+!.yarn/versions
+.pnp.*
+*.tgz
+
+website/.yarn/
+docs/.yarn/
+
+# yalc
+.yalc
+yalc.lock
+
 website/translated_docs
 website/build/
 website/node_modules

.yarnrc.yml

@@ -0,0 +1,3 @@
+nodeLinker: node-modules
+
+yarnPath: .yarn/releases/yarn-3.4.1.cjs

CONTRIBUTING.md

@@ -40,32 +40,34 @@ git clone /~https://github.com/your-username/redux.git
 
 ### Building
 
+This repo uses Yarn 3 for all package management. Please ensure that Yarn 1.x is installed globally on your system, so that Yarn 3 will run properly inside this repo.
+
 #### Building Redux
 
 Running the `build` task will create a CommonJS module-per-module build, a ES Modules build and a UMD build.
 
 ```sh
-npm run build
+yarn build
 ```
 
 ### Testing and Linting
 
 To only run linting:
 
 ```sh
-npm run lint
+yarn lint
 ```
 
 To only run tests:
 
 ```sh
-npm run test
+yarn test
 ```
 
 To continuously watch and run tests, run the following:
 
 ```sh
-npm run test:watch
+yarn test:watch
 ```
 
 ### Docs
@@ -83,7 +85,7 @@ When adding a new example, please adhere to the style and format of the existing
 To test the official Redux examples, run the following:
 
 ```sh
-npm run examples:test
+yarn examples:test
 ```
 
 Not all examples have tests. If you see an example project without tests, you are very welcome to add them in a way consistent with the examples that have tests.