[wip] bundle stats

Author: avivkeller

.github/workflows/build.yml

@@ -65,6 +65,13 @@ jobs:
           # We want to ensure we have enough RAM allocated to the Node.js process
           # this should be a last resort in case by any chances the build memory gets too high
           # but in general this should never happen
-          NODE_OPTIONS: '--max_old_space_size=4096'
+          NODE_OPTIONS: "--max_old_space_size=4096"
           # We want to ensure that static exports for all locales do not occur on `pull_request` events
           NEXT_PUBLIC_STATIC_EXPORT_LOCALE: ${{ github.event_name == 'push' }}
+          # See https://github.com/vercel/next.js/pull/81318
+          TURBOPACK_STATS: 1
+
+      - uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        with:
+          name: webpack-stats
+          path: apps/site/.next/server/webpack-stats.json

.github/workflows/bundle-compare.yml

@@ -0,0 +1,50 @@
+# Security Notes
+# Only selected Actions are allowed within this repository. Please refer to (https://github.com/nodejs/nodejs.org/settings/actions)
+# for the full list of available actions. If you want to add a new one, please reach out a maintainer with Admin permissions.
+# REVIEWERS, please always double-check security practices before merging a PR that contains Workflow changes!!
+# AUTHORS, please only use actions with explicit SHA references, and avoid using `@master` or `@main` references or `@version` tags.
+
+name: Compare Bundle Size
+
+on:
+  # TMP, for testing
+  pull_request:
+    branches:
+      - main
+
+defaults:
+  run:
+    # This ensures that the working directory is the root of the repository
+    working-directory: ./
+
+permissions:
+  contents: read
+  actions: read
+
+jobs:
+  compare:
+    name: Compare Bundle Stats
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
+        with:
+          egress-policy: audit
+
+      - uses: dawidd6/action-download-artifact@ac66b43f0e6a346234dd65d4d0c8fbb31cb316e5 # v11
+        with:
+          name: webpack-stats
+          path: head-stats
+
+      - uses: dawidd6/action-download-artifact@ac66b43f0e6a346234dd65d4d0c8fbb31cb316e5 # v11
+        with:
+          name: webpack-stats
+          commit: ${{ github.sha }}
+          path: base-stats
+
+      - uses: github/webpack-bundlesize-compare-action@89161bb25577f08577ce053c3264c0e3b7d7558f # v2.1.0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          current-stats-json-path: ./head-stats/stats.json
+          base-stats-json-path: ./base-stats/stats.json