Tests workflow (junedomingo/react-native-rename)

The Tests workflow from junedomingo/react-native-rename, explained and optimized by Latchkey.

What it does

This is the Tests workflow from the junedomingo/react-native-rename 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: Tests

env:
  FORCE_COLOR: true

on:
  push:
    branches: [master]
  pull_request:
    branches: [master]

jobs:
  build:
    runs-on: ${{matrix.os}}

    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        node-version: ['20.19']

    steps:
      - uses: actions/checkout@v6
      - uses: actions/setup-node@v6
        with:
          node-version: ${{ matrix.node-version }}

      - name: Install dependencies
        run: npm ci

      - name: Run lint
        run: npm run lint

      - name: Build lib
        run: npm run build --if-present

      - name: Run test
        run: npm test

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: Tests
 
env:
  FORCE_COLOR: true
 
on:
  push:
    branches: [master]
  pull_request:
    branches: [master]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    timeout-minutes: 30
    runs-on: ${{matrix.os}}
 
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
        node-version: ['20.19']
 
    steps:
      - uses: actions/checkout@v6
      - uses: actions/setup-node@v6
        with:
          cache: 'npm'
          node-version: ${{ matrix.node-version }}
 
      - name: Install dependencies
        run: npm ci
 
      - name: Run lint
        run: npm run lint
 
      - name: Build lib
        run: npm run build --if-present
 
      - name: Run test
        run: npm test
 

What changed

• Cancel superseded runs when a branch or PR gets a newer push.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 (3 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow