CI workflow (vercel/styled-jsx)

The CI workflow from vercel/styled-jsx, explained and optimized by Latchkey.

What it does

This is the CI workflow from the vercel/styled-jsx repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

name: CI

on:
  push:
    branches:
      - main
      - alpha
      - beta
    tags:
      - '!*'
  pull_request:

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Begin CI...
        uses: actions/checkout@v4

      - name: Use Node 20
        uses: actions/setup-node@v4
        with:
          node-version: 20.x

      - name: Enable pnpm
        run: corepack enable pnpm

      - name: Install dependencies
        run: pnpm install --frozen-lockfile
        env:
          CI: true

      - name: Build
        run: pnpm build
        env:
          CI: true

      - name: Lint
        run: pnpm lint
        env:
          CI: true

      - name: Test
        run: pnpm test
        env:
          CI: true

      - name: Test types
        run: pnpm test-types
        env:
          CI: true

      - name: Release
        if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/alpha' || github.ref == 'refs/heads/beta')
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          NPM_TOKEN: ${{ secrets.NPM_TOKEN_ELEVATED }}
        run: pnpm semantic-release

The same workflow, on Latchkey

Estimated ~20% faster on cache hits, plus fewer wasted runs and a safer supply chain. Added and changed lines are highlighted.

name: CI
 
on:
  push:
    branches:
      - main
      - alpha
      - beta
    tags:
      - '!*'
  pull_request:
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    timeout-minutes: 30
    runs-on: latchkey-small
 
    steps:
      - name: Begin CI...
        uses: actions/checkout@v4
 
      - name: Use Node 20
        uses: actions/setup-node@v4
        with:
          cache: 'npm'
          node-version: 20.x
 
      - name: Enable pnpm
        run: corepack enable pnpm
 
      - name: Install dependencies
        run: pnpm install --frozen-lockfile
        env:
          CI: true
 
      - name: Build
        run: pnpm build
        env:
          CI: true
 
      - name: Lint
        run: pnpm lint
        env:
          CI: true
 
      - name: Test
        run: pnpm test
        env:
          CI: true
 
      - name: Test types
        run: pnpm test-types
        env:
          CI: true
 
      - name: Release
        if: github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/alpha' || github.ref == 'refs/heads/beta')
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          NPM_TOKEN: ${{ secrets.NPM_TOKEN_ELEVATED }}
        run: pnpm semantic-release
 

What changed

• Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
• Cancel superseded runs when a branch or PR gets a newer push.
• Cache dependency installs on the setup step so they are served from cache.
• Add a job timeout so a hung step cannot burn hours of runner time.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

• Dependency installs

This workflow runs 1 job per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow