- name: Get yarn cache directory path id: yarn-cache-dir-path run: echo "::set-output name=dir::$(yarn cache dir)" - 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- これは