Migrate from yarn to pnpm

.github/actions/ci-common-setup/action.yaml

@@ -4,28 +4,28 @@ description: Reusable common setup for project's CI jobs
 runs:
   using: composite
   steps:
-    - uses: actions/setup-node@v2
+    - uses: actions/setup-node@v3
       with:
-        node-version: '10.21.0'
+        node-version: v20.5.1
 
-    - name: Get Node.js Version
+    - name: Get Node.js version
       id: node_version
       run: |
         echo "::set-output name=version::$(node -v)"
       shell: bash
 
-    - name: Install yarn
-      run: npm install -g yarn
+    - name: Install `pnpm`
+      run: npm install -g pnpm
       shell: bash
 
     - name: Restore possibly cached dependencies
       id: cache-node-modules
       uses: actions/cache@v2
       with:
         path: ./node_modules
-        key: node-modules-${{ runner.os }}-${{ steps.node_version.outputs.version }}-${{ hashFiles('./yarn.lock') }}
+        key: node-modules-${{ runner.os }}-${{ steps.node_version.outputs.version }}-${{ hashFiles('./pnpm-lock.yaml') }}
 
     - name: Install dependencies if weren't cached
       if: steps.cache-node-modules.outputs.cache-hit != 'true'
-      run: yarn install
+      run: pnpm install --frozen-lockfile
       shell: bash

.github/workflows/on_pr_to_master.yaml

@@ -39,9 +39,9 @@ jobs:
       - uses: ./.github/actions/ci-common-setup
 
       - name: Run tests
-        run: yarn test
+        run: pnpm run test
 
-  ts_test_build:
+  ts_build_test:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
@@ -50,6 +50,6 @@ jobs:
 
       - uses: ./.github/actions/ci-common-setup
 
-      - name: TypeScript test build
+      - name: TypeScript build test
         run: npx tsc --noEmit
 

package.json

@@ -24,10 +24,9 @@
   ],
   "scripts": {
     "test": "ts-mocha -p ./tsconfig-cjs.json",
-    "release": "./scripts/release.sh",
-    "code-check": "prettier --check \"./src/**/*.{ts,js}\" && eslint ./src --cache && yarn run test --type-check && tsc --noEmit",
+    "code-check": "prettier --check \"./src/**/*.{ts,js}\" && eslint ./src --cache && pnpm run test --type-check && tsc --noEmit",
     "build": "rm -rf ./dist && tsc -p tsconfig.json && tsc -p tsconfig-cjs.json && node ./scripts/mark-dist-dirs-package-module-type.js",
-    "prepublishOnly": "yarn build"
+    "prepublishOnly": "pnpm build"
   },
   "devDependencies": {
     "@types/chai": "^4.2.21",