Test workflow (moment/luxon)

The Test workflow from moment/luxon, explained and optimized by Latchkey.

CI health: C - fair

Point runs-on at Latchkey and get run de-duplication, job timeouts, self-healing for flaky steps, and up to 58% lower cost, applied automatically.

Grade your own workflow free or run it on Latchkey →

Source: moment/luxon.github/workflows/test.ymlLicense MITView source

What it does

This is the Test workflow from the moment/luxon 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

workflow (.yml)

name: Test

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

jobs:
  build-and-test:
    runs-on: ubuntu-latest

    env:
      LANG: en_US.utf8
      LIMIT_JEST: yes
      TZ: America/New_York

    strategy:
      matrix:
        node-version:
          - 20.20.1 # latest 20.x
          - 22.22.1 # latest 22.x
          - 24.14.0 # latest 22.x
          - 25.8.1 # bleeding edge

    steps:
      - uses: actions/checkout@v3
      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v3
        with:
          node-version: ${{ matrix.node-version }}
          cache: "npm"
      - run: npm ci
      - run: npm run build
      - run: npm run format-check
      - run: npm run test
      - run: npm run site
      - run: bash <(curl -s https://codecov.io/bash)

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: Test
 
on:
  push:
    branches: [master]
  pull_request:
    branches: [master]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build-and-test:
    timeout-minutes: 30
    runs-on: latchkey-small
 
    env:
      LANG: en_US.utf8
      LIMIT_JEST: yes
      TZ: America/New_York
 
    strategy:
      matrix:
        node-version:
          - 20.20.1 # latest 20.x
          - 22.22.1 # latest 22.x
          - 24.14.0 # latest 22.x
          - 25.8.1 # bleeding edge
 
    steps:
      - uses: actions/checkout@v3
      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v3
        with:
          node-version: ${{ matrix.node-version }}
          cache: "npm"
      - run: npm ci
      - run: npm run build
      - run: npm run format-check
      - run: npm run test
      - run: npm run site
      - run: bash <(curl -s https://codecov.io/bash)

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.
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 (4 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

actions/checkout actions/setup-node