posthog.com/.github/workflows/bundle-baseline.yml at 338f2cdcf0665cf9729bf0006d2755ad83182b03 · PostHog/posthog.com · GitHub

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name: Bundle baseline (master)

# Produces the master baseline that deploy-preview.yml diffs each PR against. Builds the
# site the same way the preview build does (GATSBY_MINIMAL + EMIT_WEBPACK_STATS) and caches
# the resulting reports. Path-filtered so content/docs-only commits don't trigger a build —
# only changes that can move the JS bundle do.

on:
    push:
        branches:
            - master
        paths:
            - 'src/**'
            - 'gatsby-*'
            - 'gatsby/**'
            - 'scripts/bundle/**'
            - 'package.json'
            - 'pnpm-lock.yaml'
            - '.github/workflows/bundle-baseline.yml'

concurrency:
    group: bundle-baseline
    cancel-in-progress: true

env:
    NODE_OPTIONS: '--max_old_space_size=12288'

jobs:
    baseline:
        name: Build & cache baseline
        runs-on: depot-ubuntu-latest-8
        timeout-minutes: 45
        permissions:
            contents: read

        steps:
            - name: Checkout
              uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1

            - name: Set up pnpm
              uses: pnpm/action-setup@c5ba7f7862a0f64c1b1a05fbac13e0b8e86ba08c # v4

            - name: Set up Node.js
              uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
              with:
                  node-version: '22'
                  cache: 'pnpm'

            - name: Restore Cloudinary metadata cache
              uses: actions/cache/restore@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
              with:
                  path: .cloudinary-resources.json
                  key: cloudinary-${{ github.run_id }}
                  restore-keys: |
                      cloudinary-

            - name: Install dependencies
              run: pnpm install --frozen-lockfile

            - name: Build site
              run: pnpm build
              env:
                  GATSBY_MINIMAL: 'true'
                  EMIT_WEBPACK_STATS: 'true'
                  CLOUDINARY_API_KEY: ${{ secrets.CLOUDINARY_API_KEY }}
                  CLOUDINARY_API_SECRET: ${{ secrets.CLOUDINARY_API_SECRET }}

            - name: Measure bundle size and eager graph
              run: |
                  node scripts/bundle/bundle-size-report.mjs
                  node scripts/bundle/check-eager-graph.mjs --report-only
                  mkdir -p bundle-report/baseline
                  cp bundle-report/eager-graph-report.json bundle-report/bundle-size-report.json bundle-report/baseline/

            - name: Save baseline to cache
              uses: actions/cache/save@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
              with:
                  path: bundle-report/baseline
                  key: bundle-baseline-${{ github.sha }}