performance.yml

# Performance budget (#301).
#
# Enforces a client-side bundle-size budget in CI using `size-limit`
# (@size-limit/file). The job runs a real `next build` (Next.js needs
# NEXT_PUBLIC_API_URL at prerender time — the documented dev value is used
# here; it is not a secret) and then checks the measured output against the
# budgets in `.size-limit.js`. A large regression (e.g. a heavyweight
# dependency added to a route or to the shared vendor bundle) fails the check.
name: performance

on:
  pull_request:
  push:
    branches: [main]

jobs:
  size-limit:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write
    env:
      NEXT_PUBLIC_API_URL: http://localhost:4000/api
    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-node@v7
        with:
          node-version: 20
          cache: npm

      - name: Install dependencies
        run: npm ci

      - name: Build production bundle
        run: npm run build

      - name: Check performance budget
        run: npx size-limit --json