Bundle size analysis

.github/workflows/bundle_size.yml

@@ -0,0 +1,88 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
+name: 'Bundle size'
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+defaults:
+  run:
+    working-directory: ./
+
+permissions:
+  contents: read # for checkout repository
+  actions: read # for fetching base branch bundle stats
+  pull-requests: write # for comments
+
+jobs:
+  bundle_size:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Set up Bun
+        uses: oven-sh/setup-bun@v1
+      - name: Bun version
+        run: bun --version
+      - name: Install dependencies
+        run: bun install --frozen-lockfile
+      - name: Restore build
+        uses: actions/cache@v3
+        id: restore-build-cache
+        env:
+          cache-name: cache-next-build
+        with:
+          path: .next/cache
+          key: ${{ runner.os }}-build-${{ env.cache-name }}
+      - name: Build
+        run: bun run build
+      - name: Analyze bundle
+        run: bun run bundle:analyze
+      - name: Upload bundle
+        uses: actions/upload-artifact@v4
+        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: bundle_size.yml
+          branch: ${{ github.event.pull_request.base.ref }}
+          path: .next/analyze/base
+      - name: Compare with base branch bundle
+        if: success() && github.event.number
+        run: ls -laR .next/analyze/base && bun run bundle:compare
+      - name: Get Comment Body
+        id: get-comment-body
+        if: success() && github.event.number
+        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

package.json

@@ -8,6 +8,8 @@
     "test:units": "vitest",
     "test:lint": "next lint --max-warnings=0 --format=compact",
     "test:format": "prettier . --check",
+    "bundle:analyze": "report",
+    "bundle:compare": "compare",
     "format": "prettier . --write"
   },
   "dependencies": {
@@ -37,11 +39,18 @@
     "eslint-config-xo-typescript": "1.0.1",
     "eslint-plugin-tailwindcss": "3.13.0",
     "happy-dom": "12.10.3",
+    "nextjs-bundle-analysis": "0.5.0",
     "postcss": "8.4.31",
     "prettier": "3.0.3",
     "prettier-plugin-tailwindcss": "0.5.6",
     "tailwindcss": "3.3.5",
     "typescript": "5.2.2",
     "vitest": "0.34.6"
+  },
+  "nextBundleAnalysis": {
+    "budget": null,
+    "budgetPercentIncreaseRed": 20,
+    "minimumChangeThreshold": 0,
+    "showDetails": true
   }
 }