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ImmutableJeffreyImmutableJeffrey
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ci(audience): add CDN bundle size gate (SDK-115)
- Adds bundlebudget.json: 24 KB max / 20 KB warn gzipped for dist/cdn/imtbl-audience.global.js. Current bundle sits at 17.9 KB gz. - Adds .github/workflows/audience-bundle-size.yaml ported from pixel-bundle-size.yaml; runs on PRs touching packages/audience/sdk/** or packages/audience/core/**, posts a sticky comment with raw + gzipped delta vs main, fails if over budget. Refs SDK-115
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‎.github/workflows/audience-bundle-size.yaml‎

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name: Audience Bundle Size
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on:
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pull_request:
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branches:
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- "**"
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paths:
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- "packages/audience/sdk/**"
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- "packages/audience/core/**"
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permissions:
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pull-requests: write
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contents: read
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env:
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NX_CLOUD_ACCESS_TOKEN: ${{ secrets.TS_IMMUTABLE_SDK_NX_TOKEN }}
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jobs:
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bundle-size:
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name: Audience Bundle Size Check
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runs-on: ubuntu-latest-4-cores
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steps:
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- name: Checkout code
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uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # pin@v6.0.1
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with:
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ref: ${{ github.event.pull_request.head.sha }}
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fetch-depth: 0
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- name: Setup
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uses: ./.github/actions/setup
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- name: Read budget config
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id: budget
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run: |
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BUDGET_FILE="packages/audience/sdk/bundlebudget.json"
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MAX_GZIP=$(jq '.budgets[0].maxSizeGzip' "$BUDGET_FILE")
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WARN_GZIP=$(jq '.budgets[0].warnSizeGzip' "$BUDGET_FILE")
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echo "max_gzip=$MAX_GZIP" >> "$GITHUB_OUTPUT"
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echo "warn_gzip=$WARN_GZIP" >> "$GITHUB_OUTPUT"
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- name: Build audience SDK (PR)
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run: pnpm --filter @imtbl/audience... build
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- name: Measure PR bundle size
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id: pr_size
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run: |
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BUNDLE="packages/audience/sdk/dist/cdn/imtbl-audience.global.js"
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RAW_SIZE=$(stat --format=%s "$BUNDLE")
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GZIP_SIZE=$(gzip -c "$BUNDLE" | wc -c)
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echo "raw=$RAW_SIZE" >> "$GITHUB_OUTPUT"
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echo "gzip=$GZIP_SIZE" >> "$GITHUB_OUTPUT"
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echo "PR bundle: raw=${RAW_SIZE} bytes, gzip=${GZIP_SIZE} bytes"
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- name: Build audience SDK (base) and measure
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id: base_size
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run: |
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BASE_SHA="${{ github.event.pull_request.base.sha }}"
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git checkout "$BASE_SHA"
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pnpm install --frozen-lockfile
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pnpm --filter @imtbl/audience... build 2>/dev/null || true
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BUNDLE="packages/audience/sdk/dist/cdn/imtbl-audience.global.js"
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if [ -f "$BUNDLE" ]; then
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RAW_SIZE=$(stat --format=%s "$BUNDLE")
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GZIP_SIZE=$(gzip -c "$BUNDLE" | wc -c)
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else
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RAW_SIZE=0
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GZIP_SIZE=0
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fi
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echo "raw=$RAW_SIZE" >> "$GITHUB_OUTPUT"
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echo "gzip=$GZIP_SIZE" >> "$GITHUB_OUTPUT"
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echo "Base bundle: raw=${RAW_SIZE} bytes, gzip=${GZIP_SIZE} bytes"
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git checkout "${{ github.event.pull_request.head.sha }}"
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pnpm install --frozen-lockfile
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- name: Evaluate bundle size
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id: evaluate
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run: |
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PR_GZIP=${{ steps.pr_size.outputs.gzip }}
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PR_RAW=${{ steps.pr_size.outputs.raw }}
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BASE_GZIP=${{ steps.base_size.outputs.gzip }}
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BASE_RAW=${{ steps.base_size.outputs.raw }}
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MAX_GZIP=${{ steps.budget.outputs.max_gzip }}
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WARN_GZIP=${{ steps.budget.outputs.warn_gzip }}
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DELTA_GZIP=$((PR_GZIP - BASE_GZIP))
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DELTA_RAW=$((PR_RAW - BASE_RAW))
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if [ $DELTA_GZIP -gt 0 ]; then DELTA_GZIP_FMT="+${DELTA_GZIP}"; else DELTA_GZIP_FMT="${DELTA_GZIP}"; fi
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if [ $DELTA_RAW -gt 0 ]; then DELTA_RAW_FMT="+${DELTA_RAW}"; else DELTA_RAW_FMT="${DELTA_RAW}"; fi
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STATUS="pass"
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STATUS_ICON="white_check_mark"
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if [ $PR_GZIP -gt $MAX_GZIP ]; then
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STATUS="fail"
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STATUS_ICON="x"
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elif [ $PR_GZIP -gt $WARN_GZIP ]; then
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STATUS="warn"
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STATUS_ICON="warning"
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fi
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PR_GZIP_KB=$(echo "scale=2; $PR_GZIP / 1024" | bc)
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MAX_GZIP_KB=$(echo "scale=2; $MAX_GZIP / 1024" | bc)
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WARN_GZIP_KB=$(echo "scale=2; $WARN_GZIP / 1024" | bc)
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{
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echo "## :${STATUS_ICON}: Audience Bundle Size — @imtbl/audience"
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echo ""
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echo "| Metric | Size | Delta vs main |"
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echo "|--------|------|---------------|"
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echo "| **Gzipped** | ${PR_GZIP} bytes (${PR_GZIP_KB} KB) | ${DELTA_GZIP_FMT} bytes |"
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echo "| Raw (minified) | ${PR_RAW} bytes | ${DELTA_RAW_FMT} bytes |"
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echo ""
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echo "**Budget:** ${MAX_GZIP_KB} KB gzipped (warn at ${WARN_GZIP_KB} KB)"
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} > /tmp/comment-body.md
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if [ "$STATUS" = "warn" ]; then
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echo "" >> /tmp/comment-body.md
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echo "> :warning: **Approaching budget** — gzipped size exceeds ${WARN_GZIP_KB} KB warning threshold." >> /tmp/comment-body.md
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fi
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if [ "$STATUS" = "fail" ]; then
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echo "" >> /tmp/comment-body.md
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echo "> :x: **Over budget** — gzipped size exceeds ${MAX_GZIP_KB} KB limit. Reduce bundle size before merging." >> /tmp/comment-body.md
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fi
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echo "status=$STATUS" >> "$GITHUB_OUTPUT"
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EOF_MARKER=$(head -c 20 /dev/urandom | base64 | tr -d '/+=' | head -c 20)
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{
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echo "comment<<${EOF_MARKER}"
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cat /tmp/comment-body.md
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echo "${EOF_MARKER}"
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} >> "$GITHUB_OUTPUT"
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- name: Post PR comment
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uses: marocchino/sticky-pull-request-comment@67d0dec7b07ed060a405f9b2a64b8ab319fdd7db # pin@v2.9.2
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with:
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header: audience-bundle-size
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message: ${{ steps.evaluate.outputs.comment }}
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- name: Fail if over budget
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if: steps.evaluate.outputs.status == 'fail'
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run: |
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echo "::error::Audience bundle gzipped size (${{ steps.pr_size.outputs.gzip }} bytes) exceeds budget (${{ steps.budget.outputs.max_gzip }} bytes)"
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exit 1

‎packages/audience/sdk/bundlebudget.json‎

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{
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"budgets": [
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{
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"file": "dist/cdn/imtbl-audience.global.js",
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"maxSizeGzip": 24576,
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"warnSizeGzip": 20480
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}
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]
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}

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