Fix caching

.github/workflows/nodejs.yml

@@ -16,7 +16,19 @@ jobs:
               uses: actions/setup-node@v2
               with:
                   node-version: 14.x
-                  cache: 'npm'
+
+            - name: Get yarn cache directory path
+              id: yarn-cache-dir-path
+              run: echo "::set-output name=dir::$(yarn cache dir)"
+
+            - name: Cache yarn modules
+              uses: actions/cache@v2
+              id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
+              with:
+                  path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+                  key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+                  restore-keys: |
+                      ${{ runner.os }}-yarn-
 
             - run: yarn install --frozen-lockfile