Node CI Test workflow (styled-components/polished)

The Node CI Test workflow from styled-components/polished, explained and optimized by Latchkey.

What it does

This is the Node CI Test workflow from the styled-components/polished 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: Node CI Test

on:
  push:
    branches:
      - "main"
  pull_request:
    types: [opened, synchronize, reopened]

jobs:
  build-test:

    strategy:
      matrix:
        node-version: [14.x, 16.x, 17.x]

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2
    - name: Use Node.js ${{ matrix.node-version }}
      uses: actions/setup-node@v1
      with:
        node-version: ${{ matrix.node-version }}
    - name: Install Yarn
      run: npm install -g yarn
    - name: Get yarn cache directory path
      id: yarn-cache-dir-path
      run: echo "::set-output name=dir::$(yarn cache dir)"
    - uses: actions/cache@v2
      id: yarn-cache
      with:
        path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
        key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
        restore-keys: |
          ${{ runner.os }}-yarn-
    - name: Install Dependencies
      run: yarn install --ignore-scripts --frozen-lockfile
    - name: Run Jest Tests
      run: yarn test
    - name: Lint Files
      run: yarn lint
    - name: Build and Check Types
      run: |
        yarn flow
        yarn build:flow

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: Node CI Test
 
on:
  push:
    branches:
      - "main"
  pull_request:
    types: [opened, synchronize, reopened]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build-test:
    timeout-minutes: 30
 
    strategy:
      matrix:
        node-version: [14.x, 16.x, 17.x]
 
    runs-on: latchkey-small
 
    steps:
    - uses: actions/checkout@v2
    - name: Use Node.js ${{ matrix.node-version }}
      uses: actions/setup-node@v1
      with:
        cache: 'npm'
        node-version: ${{ matrix.node-version }}
    - name: Install Yarn
      run: npm install -g yarn
    - name: Get yarn cache directory path
      id: yarn-cache-dir-path
      run: echo "::set-output name=dir::$(yarn cache dir)"
    - uses: actions/cache@v2
      id: yarn-cache
      with:
        path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
        key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
        restore-keys: |
          ${{ runner.os }}-yarn-
    - name: Install Dependencies
      run: yarn install --ignore-scripts --frozen-lockfile
    - name: Run Jest Tests
      run: yarn test
    - name: Lint Files
      run: yarn lint
    - name: Build and Check Types
      run: |
        yarn flow
        yarn build:flow
 

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.

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