Bundle size analysis #2
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| name: 'Bundle size analysis' | |
| on: | |
| pull_request: | |
| branches: | |
| - main | |
| push: | |
| branches: | |
| - main | |
| workflow_dispatch: | |
| defaults: | |
| run: | |
| # change this if your nextjs app does not live at the root of the repo | |
| working-directory: ./ | |
| permissions: | |
| contents: read # for checkout repository | |
| actions: read # for fetching base branch bundle stats | |
| pull-requests: write # for comments | |
| jobs: | |
| analyze: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - uses: actions/checkout@v3 | |
| - name: Install Node.js | |
| uses: actions/setup-node@v3 | |
| with: | |
| node-version-file: '.nvmrc' | |
| - name: Install dependencies | |
| run: npm ci | |
| - name: Restore next build | |
| uses: actions/cache@v3 | |
| id: restore-build-cache | |
| env: | |
| cache-name: cache-next-build | |
| with: | |
| # if you use a custom build directory, replace all instances of `.next` in this file with your build directory | |
| # ex: if your app builds to `dist`, replace `.next` with `dist` | |
| path: .next/cache | |
| # change this if you prefer a more strict cache | |
| key: ${{ runner.os }}-build-${{ env.cache-name }} | |
| - name: Build Next.js app | |
| run: npm run build | |
| # Here's the first place where next-bundle-analysis' own script is used | |
| # This step pulls the raw bundle stats for the current bundle | |
| - name: Analyze bundle | |
| run: npx -p nextjs-bundle-analysis report | |
| - name: Upload bundle | |
| uses: actions/upload-artifact@v3 | |
| with: | |
| name: bundle | |
| path: .next/analyze/__bundle_analysis.json | |
| - name: Download base branch bundle stats | |
| uses: dawidd6/action-download-artifact@v2 | |
| if: success() && github.event.number | |
| with: | |
| workflow: nextjs_bundle_analysis.yml | |
| branch: ${{ github.event.pull_request.base.ref }} | |
| path: .next/analyze/base | |
| # And here's the second place - this runs after we have both the current and | |
| # base branch bundle stats, and will compare them to determine what changed. | |
| # There are two configurable arguments that come from package.json: | |
| # | |
| # - budget: optional, set a budget (bytes) against which size changes are measured | |
| # it's set to 350kb here by default, as informed by the following piece: | |
| # https://infrequently.org/2021/03/the-performance-inequality-gap/ | |
| # | |
| # - red-status-percentage: sets the percent size increase where you get a red | |
| # status indicator, defaults to 20% | |
| # | |
| # Either of these arguments can be changed or removed by editing the `nextBundleAnalysis` | |
| # entry in your package.json file. | |
| - name: Compare with base branch bundle | |
| if: success() && github.event.number | |
| run: ls -laR .next/analyze/base && npx -p nextjs-bundle-analysis compare | |
| - name: Get Comment Body | |
| id: get-comment-body | |
| if: success() && github.event.number | |
| # https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#multiline-strings | |
| run: | | |
| echo "body<<EOF" >> $GITHUB_OUTPUT | |
| echo "$(cat .next/analyze/__bundle_analysis_comment.txt)" >> $GITHUB_OUTPUT | |
| echo EOF >> $GITHUB_OUTPUT | |
| - name: Find Comment | |
| uses: peter-evans/find-comment@v2 | |
| if: success() && github.event.number | |
| id: fc | |
| with: | |
| issue-number: ${{ github.event.number }} | |
| body-includes: '<!-- __NEXTJS_BUNDLE -->' | |
| - name: Create Comment | |
| uses: peter-evans/create-or-update-comment@v2 | |
| if: success() && github.event.number && steps.fc.outputs.comment-id == 0 | |
| with: | |
| issue-number: ${{ github.event.number }} | |
| body: ${{ steps.get-comment-body.outputs.body }} | |
| - name: Update Comment | |
| uses: peter-evans/create-or-update-comment@v2 | |
| if: success() && github.event.number && steps.fc.outputs.comment-id != 0 | |
| with: | |
| issue-number: ${{ github.event.number }} | |
| body: ${{ steps.get-comment-body.outputs.body }} | |
| comment-id: ${{ steps.fc.outputs.comment-id }} | |
| edit-mode: replace |