Extract cached yarn logic to a separate file

.github/workflows/ci.yml

@@ -189,26 +189,8 @@ jobs:
         with:
           node-version: 12
 
-      - name: Cache node modules
-        id: cacheNodeModules
-        uses: actions/cache@v2
-        with:
-          path: '**/node_modules'
-          key: ${{ runner.os }}-cacheNodeModules-${{ hashFiles('.yarnrc', 'remote/.yarnrc', '**/yarn.lock', '!**/node_modules/**/yarn.lock', '!**/.*/**/yarn.lock') }}
-          restore-keys: ${{ runner.os }}-cacheNodeModules-
-
-      - name: Cache /build/ scripts
-        id: cacheBuildScripts
-        uses: actions/cache@v2
-        with:
-          path: build/**/*.js
-          key: ${{ runner.os }}-cacheBuildScripts-${{ hashFiles('build/yarn.lock', 'build/tsconfig.json', 'build/tsconfig.build.json', 'build/**/*.ts', '!**/node_modules/**/*.ts') }}
-
-      - name: Execute yarn
-        if: ${{ steps.cacheNodeModules.outputs.cache-hit != 'true' || steps.cacheBuildScripts.outputs.cache-hit != 'true' }}
-        env:
-          PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: 1
-        run: yarn --frozen-lockfile
+      - name: Cached yarn
+        uses: ./ci/cached-yarn
 
       - name: Run Monaco Editor Checks
         run: yarn monaco-compile-check

.github/workflows/ci/cached-yarn.yml

@@ -0,0 +1,24 @@
+name: Cached yarn
+runs:
+  using: composite
+  steps:
+    - name: Cache node modules
+      id: cacheNodeModules
+      uses: actions/cache@v2
+      with:
+        path: '**/node_modules'
+        key: ${{ runner.os }}-cacheNodeModules-${{ hashFiles('.yarnrc', 'remote/.yarnrc', '**/yarn.lock', '!**/node_modules/**/yarn.lock', '!**/.*/**/yarn.lock') }}
+        restore-keys: ${{ runner.os }}-cacheNodeModules-
+
+    - name: Cache /build/ scripts
+      id: cacheBuildScripts
+      uses: actions/cache@v2
+      with:
+        path: build/**/*.js
+        key: ${{ runner.os }}-cacheBuildScripts-${{ hashFiles('build/yarn.lock', 'build/tsconfig.json', 'build/tsconfig.build.json', 'build/**/*.ts', '!**/node_modules/**/*.ts') }}
+
+    - name: Execute yarn
+      if: ${{ steps.cacheNodeModules.outputs.cache-hit != 'true' || steps.cacheBuildScripts.outputs.cache-hit != 'true' }}
+      env:
+        PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: 1
+      run: yarn --frozen-lockfile