ci: comment when node_modules/ changes in size

.github/workflows/check-node-modules-size.yml

@@ -0,0 +1,79 @@
+name: Check changes in `node_modules/`'s size.'
+
+# https://stackoverflow.com/questions/68737385/how-to-trigger-github-actions-on-push-of-current-branch/68737519#68737519
+on: [push]
+
+jobs:
+ analyze-size:
+ runs-on: ubuntu-latest
+
+ steps:
+ - name: Checkout code
+ uses: actions/checkout@v2
+
+ - name: Setup Node.js
+ uses: actions/setup-node@v2
+ with:
+ node-version: 18
+
+ - name: Install dependencies
+ run: npm install
+
+ - name: Get the size of `node_modules/` on the current branch.
+ id: current_size
+ run: echo "CURRENT_SIZE=$(du -sh node_modules | awk '{print $1}')" >> $GITHUB_ENV
+ env:
+ GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+ # Checkout the main branch and get the size of its `node_modules/` directory.
+ - name: Checkout main branch
+ uses: actions/checkout@v2
+ with:
+ ref: main
+ - name: Remove `node_modules/` for a clean slate.
+ run: rm -rf node_modules/
+ - name: Reinstall dependencies so we can check the size of `node_modules/`.
+ run: npm install
+ - name: Get the size of `node_modules/`.
+ id: main_size
+ run: echo "MAIN_SIZE=$(du -sh node_modules | awk '{print $1}')" >> $GITHUB_ENV
+ env:
+ GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+ - name: Print sizes
+ run: |
+ echo "Main branch size: $MAIN_SIZE"
+ echo "Current branch size: $CURRENT_SIZE"
+
+ - name: Add a comment to the pull request if `node_modules/` changed in size.
+ if: ${{ env.CURRENT_SIZE != env.MAIN_SIZE }}
+ uses: actions/github-script@v6
+ with:
+ script: |
+ const body = `\`node_modules/\` has changed in size.\n
+ Main branch size: ${process.env.MAIN_SIZE}\n
+ Current branch size: ${process.env.CURRENT_SIZE}`
+
+ const { owner, repo } = context.repo;
+ const commit_sha = context.sha;
+ console.log('commit_sha:', commit_sha);
+ console.log('owner:', owner);
+ console.log('repo:', repo);
+ const { data } = await github.rest.repos.listPullRequestsAssociatedWithCommit({
+ commit_sha,
+ owner,
+ repo,
+ });
+ if (data[0]) {
+ const issue_number = data[0].number;
+ console.log('issue_number is', issue_number);
+ // https://stackoverflow.com/questions/58066966/commenting-a-pull-request-in-a-github-action/76215842#76215842
+ github.rest.issues.createComment({
+ body,
+ issue_number,
+ owner,
+ repo,
+ });
+ } else {
+ console.warn('No pull request found for commit_sha', commit_sha);
+ }