sass-loader workflow (webpack/sass-loader)

The sass-loader workflow from webpack/sass-loader, explained and optimized by Latchkey.

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Source: webpack/sass-loader.github/workflows/nodejs.ymlLicense MITView source

What it does

This is the sass-loader workflow from the webpack/sass-loader 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: sass-loader

on:
  push:
    branches:
      - main
      - next
  pull_request:
    branches:
      - main
      - next

permissions:
  contents: read

jobs:
  lint:
    name: Lint - ${{ matrix.os }} - Node v${{ matrix.node-version }}

    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

    strategy:
      matrix:
        os: [ubuntu-latest]
        node-version: [lts/*]

    runs-on: ${{ matrix.os }}

    concurrency:
      group: lint-${{ matrix.os }}-v${{ matrix.node-version }}-${{ github.ref }}
      cancel-in-progress: true

    steps:
      - name: Checkout Repository
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0

      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version: ${{ matrix.node-version }}
          cache: "npm"

      - name: Install dependencies
        run: npm ci

      - name: Lint
        run: npm run lint

      - name: Security audit
        run: npm run security -- --only=prod

      - name: Build types
        run: npm run build:types

      - name: Check types
        run: if [ -n "$(git status types --porcelain)" ]; then echo "Missing types. Update types by running 'npm run build:types'"; exit 1; else echo "All types are valid"; fi

  test:
    name: Test - ${{ matrix.os }} - Node v${{ matrix.node-version }}, Webpack ${{ matrix.webpack-version }}

    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
        node-version: [22.x, 24.x, 26.x]
        webpack-version: [latest]

    runs-on: ${{ matrix.os }}

    concurrency:
      group: test-${{ matrix.os }}-v${{ matrix.node-version }}-${{ matrix.webpack-version }}-${{ github.ref }}
      cancel-in-progress: true

    steps:
      - name: Setup Git
        if: matrix.os == 'windows-latest'
        run: git config --global core.autocrlf input

      - name: Checkout Repository
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version: ${{ matrix.node-version }}
          cache: "npm"

      - name: Install dependencies
        run: npm ci

      - name: Run tests for webpack version ${{ matrix.webpack-version }}
        run: npm run test:coverage

      - name: Codecov
        uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6.0.0
        with:
          token: ${{ secrets.CODECOV_TOKEN }}

The same workflow, on Latchkey

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

name: sass-loader
 
on:
  push:
    branches:
      - main
      - next
  pull_request:
    branches:
      - main
      - next
 
permissions:
  contents: read
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  lint:
    timeout-minutes: 30
    name: Lint - ${{ matrix.os }} - Node v${{ matrix.node-version }}
 
    env:
      GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
    strategy:
      matrix:
        os: [ubuntu-latest]
        node-version: [lts/*]
 
    runs-on: ${{ matrix.os }}
 
    concurrency:
      group: lint-${{ matrix.os }}-v${{ matrix.node-version }}-${{ github.ref }}
      cancel-in-progress: true
 
    steps:
      - name: Checkout Repository
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0
 
      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version: ${{ matrix.node-version }}
          cache: "npm"
 
      - name: Install dependencies
        run: npm ci
 
      - name: Lint
        run: npm run lint
 
      - name: Security audit
        run: npm run security -- --only=prod
 
      - name: Build types
        run: npm run build:types
 
      - name: Check types
        run: if [ -n "$(git status types --porcelain)" ]; then echo "Missing types. Update types by running 'npm run build:types'"; exit 1; else echo "All types are valid"; fi
 
  test:
    timeout-minutes: 30
    name: Test - ${{ matrix.os }} - Node v${{ matrix.node-version }}, Webpack ${{ matrix.webpack-version }}
 
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
        node-version: [22.x, 24.x, 26.x]
        webpack-version: [latest]
 
    runs-on: ${{ matrix.os }}
 
    concurrency:
      group: test-${{ matrix.os }}-v${{ matrix.node-version }}-${{ matrix.webpack-version }}-${{ github.ref }}
      cancel-in-progress: true
 
    steps:
      - name: Setup Git
        if: matrix.os == 'windows-latest'
        run: git config --global core.autocrlf input
 
      - name: Checkout Repository
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
      - name: Use Node.js ${{ matrix.node-version }}
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version: ${{ matrix.node-version }}
          cache: "npm"
 
      - name: Install dependencies
        run: npm ci
 
      - name: Run tests for webpack version ${{ matrix.webpack-version }}
        run: npm run test:coverage
 
      - name: Codecov
        uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6.0.0
        with:
          token: ${{ secrets.CODECOV_TOKEN }}

What changed

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 2 jobs (10 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 codecov/codecov-action