Node.js CI workflow (NaturalNode/natural)

The Node.js CI workflow from NaturalNode/natural, explained and optimized by Latchkey.

CI health: F - at risk

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

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Source: NaturalNode/natural.github/workflows/node.js.ymlLicense MITView source

What it does

This is the Node.js CI workflow from the NaturalNode/natural 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)

# This workflow will do a clean install of node dependencies, 
# build the source code and run tests across different versions of node
# For more information see: 
# https://help.github.com/actions/language-and-framework-guides/
# using-nodejs-with-github-actions
---
name: Node.js CI

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

jobs:
  build:

    runs-on: ubuntu-latest

    services:
      redis:
        image: redis:latest
        ports:
          - 6379:6379
      postgres:
        image: postgres:latest
        env:
          POSTGRES_USER: user
          POSTGRES_PASSWORD: password
          POSTGRES_DB: naturaldb
          POSTGRES_HOST: localhost
          POSTGRES_PORT: 5432
          POSTGRES_TABLE: naturaltable
        ports:
          - 5432:5432  
      memcached:
        image: memcached:latest
        ports:
          - 11211:11211
      mongodb:
        image: mongo:latest
        ports:
          - 27017:27017

    strategy:
      matrix:
        node-version: [20.x, 22.x, 24.x]
        # See supported Node.js release schedule at 
        #https://nodejs.org/en/about/releases/

    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v4
        with:
          node-version: ${{ matrix.node-version }}

      - name: Clean install
        run: npm ci

      - name: Lint
        run: npm run lint

      - name: Build
        run: npm run build

      - name: ESM smoke test
        run: npm run smoke:esm
    
      - name: Run Istanbul coverage
        run: npm run coverage

      # Save coverage report in Coveralls
      - name: Coveralls
        uses: coverallsapp/github-action@master
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}

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.

# This workflow will do a clean install of node dependencies, 
# build the source code and run tests across different versions of node
# For more information see: 
# https://help.github.com/actions/language-and-framework-guides/
# using-nodejs-with-github-actions
---
name: Node.js CI
 
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: latchkey-small
 
    services:
      redis:
        image: redis:latest
        ports:
          - 6379:6379
      postgres:
        image: postgres:latest
        env:
          POSTGRES_USER: user
          POSTGRES_PASSWORD: password
          POSTGRES_DB: naturaldb
          POSTGRES_HOST: localhost
          POSTGRES_PORT: 5432
          POSTGRES_TABLE: naturaltable
        ports:
          - 5432:5432  
      memcached:
        image: memcached:latest
        ports:
          - 11211:11211
      mongodb:
        image: mongo:latest
        ports:
          - 27017:27017
 
    strategy:
      matrix:
        node-version: [20.x, 22.x, 24.x]
        # See supported Node.js release schedule at 
        #https://nodejs.org/en/about/releases/
 
    steps:
      - name: Checkout code
        uses: actions/checkout@v2
 
      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@v4
        with:
          cache: 'npm'
          node-version: ${{ matrix.node-version }}
 
      - name: Clean install
        run: npm ci
 
      - name: Lint
        run: npm run lint
 
      - name: Build
        run: npm run build
 
      - name: ESM smoke test
        run: npm run smoke:esm
    
      - name: Run Istanbul coverage
        run: npm run coverage
 
      # Save coverage report in Coveralls
      - name: Coveralls
        uses: coverallsapp/github-action@master
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}

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

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

actions/checkout actions/setup-node