Tests workflow (nolanlawson/fuite)

The Tests workflow from nolanlawson/fuite, explained and optimized by Latchkey.

What it does

This is the Tests workflow from the nolanlawson/fuite repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

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

The workflow

name: Tests
on:
  pull_request:
    branches: [ master ]
  push:
    branches: [ master ]
jobs:
  build:
    # Hopefully temporary fix for Puppeteer "No usable sandbox!" error which we get on Ubuntu 24.04+
    runs-on: ubuntu-22.04
    strategy:
      matrix:
        # The lowest one should be the minimum supported node version, per package.json "engines" field
        node: [ "18.0.0", "20", "22" ]
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
      - uses: pnpm/action-setup@v4
        with:
          node-version: ${{ matrix.node }}
          cache: 'pnpm'
      - run: pnpm install --frozen-lockfile
      - run: pnpm lint
      - run: pnpm 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
on:
  pull_request:
    branches: [ master ]
  push:
    branches: [ master ]
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    timeout-minutes: 30
    # Hopefully temporary fix for Puppeteer "No usable sandbox!" error which we get on Ubuntu 24.04+
    runs-on: latchkey-small
    strategy:
      matrix:
        # The lowest one should be the minimum supported node version, per package.json "engines" field
        node: [ "18.0.0", "20", "22" ]
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          cache: 'npm'
      - uses: pnpm/action-setup@v4
        with:
          node-version: ${{ matrix.node }}
          cache: 'pnpm'
      - run: pnpm install --frozen-lockfile
      - run: pnpm lint
      - run: pnpm test
 

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• Cancel superseded runs when a branch or PR gets a newer push.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.

1 third-party action is referenced by a movable tag. Pin it to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

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
• End-to-end and browser tests

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