ci: create setup action for Node.js environment and update CI workflow

Author: lposen

.github/action/setup/action.yml

@@ -0,0 +1,27 @@
+name: Setup
+description: Setup Node.js and install dependencies
+
+runs:
+  using: composite
+  steps:
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version-file: .nvmrc
+
+    - name: Cache dependencies
+      id: yarn-cache
+      uses: actions/cache@v3
+      with:
+        path: |
+          **/node_modules
+          .yarn/install-state.gz
+        key: ${{ runner.os }}-yarn-${{ hashFiles('yarn.lock') }}-${{ hashFiles('**/package.json', '!node_modules/**') }}
+        restore-keys: |
+          ${{ runner.os }}-yarn-${{ hashFiles('yarn.lock') }}
+          ${{ runner.os }}-yarn-
+
+    - name: Install dependencies
+      if: steps.yarn-cache.outputs.cache-hit != 'true'
+      run: yarn install --immutable
+      shell: bash

.github/workflows/test.yml

@@ -1,40 +1,51 @@
-name: Test
-
+name: CI
 on:
+  push:
+    branches:
+      - main
   pull_request:
-    types: [opened, synchronize, reopened]
     branches:
       - main
-      - master
+  merge_group:
+    types:
+      - checks_requested
 
 jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup
+
+      - name: Lint files
+        run: yarn lint
+
+      - name: Typecheck files
+        run: yarn typecheck
+
   test:
     runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup
 
-    strategy:
-      matrix:
-        node-version: [18.x]
+      - name: Run unit tests
+        run: yarn test:coverage --maxWorkers=2
 
+  build-library:
+    runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
-
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4
-      with:
-        node-version: ${{ matrix.node-version }}
-        cache: 'npm'
-
-    - name: Install dependencies
-      run: npm ci
-
-    - name: Run tests with coverage
-      run: npm test -- --coverage
-
-    - name: Upload coverage reports to Codecov
-      uses: codecov/codecov-action@v4
-      with:
-        token: ${{ secrets.CODECOV_TOKEN }}
-        directory: ./coverage/
-        flags: unittests
-        name: codecov-umbrella
-        fail_ci_if_error: true 
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup
+        uses: ./.github/actions/setup
+
+      - name: Build package
+        run: yarn prepare