CI Checks workflow (winstonjs/winston)

The CI Checks workflow from winstonjs/winston, explained and optimized by Latchkey.

What it does

This is the CI Checks workflow from the winstonjs/winston 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 Checks

on:
  pull_request:
    branches:
      - main
      - master
  push:
    branches:
      - main
      - master

permissions:
  contents: read #  to fetch code (actions/checkout)

jobs:
  Tests:
    permissions:
      contents: read #  to fetch code (actions/checkout)
      checks: write #  to create new checks (coverallsapp/github-action)

    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        node:
          - 22
          - 24
          - 26
    steps:
      - uses: actions/checkout@v6
      - uses: actions/setup-node@v6
        with:
          node-version: ${{ matrix.node }}

      - name: Install Dependencies
        run: npm clean-install

      - name: Lint
        run: npm run lint

      - name: Unit Tests (with coverage)
        run: npm run test:unit

      - name: Integration Tests
        run: npm run test:integration

      - name: Report test coverage to Coveralls.io
        if: matrix.node == '24'
        uses: coverallsapp/github-action@master
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}

      - name: TypeScript Test
        run: npm run test:typescript

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 Checks
 
on:
  pull_request:
    branches:
      - main
      - master
  push:
    branches:
      - main
      - master
 
permissions:
  contents: read #  to fetch code (actions/checkout)
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  Tests:
    timeout-minutes: 30
    permissions:
      contents: read #  to fetch code (actions/checkout)
      checks: write #  to create new checks (coverallsapp/github-action)
 
    runs-on: latchkey-small
    strategy:
      fail-fast: false
      matrix:
        node:
          - 22
          - 24
          - 26
    steps:
      - uses: actions/checkout@v6
      - uses: actions/setup-node@v6
        with:
          cache: 'npm'
          node-version: ${{ matrix.node }}
 
      - name: Install Dependencies
        run: npm clean-install
 
      - name: Lint
        run: npm run lint
 
      - name: Unit Tests (with coverage)
        run: npm run test:unit
 
      - name: Integration Tests
        run: npm run test:integration
 
      - name: Report test coverage to Coveralls.io
        if: matrix.node == '24'
        uses: coverallsapp/github-action@master
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
 
      - name: TypeScript Test
        run: npm run test:typescript
 

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.

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