skip npm ci if cache hit

.github/workflows/transpile.yml

@@ -19,9 +19,11 @@ jobs:
         with:
           node-version: 10.x
       - uses: actions/cache@v2
+        id: cache
         with:
           path: '**/node_modules'
           key: npm-v2-${{ hashFiles('**/package-lock.json') }}
           restore-keys: npm-v2-
       - run: npm ci
+        if: steps.cache.outputs.cache-hit != 'true'
       - run: bash scripts/transpile-push.sh