babel-loader workflow (babel/babel-loader)
The babel-loader workflow from babel/babel-loader, explained and optimized by Latchkey.
C
CI health: C - fair
The optimized version below adds run de-duplication, job timeouts, SHA-pinned actions.
What it does
This is the babel-loader workflow from the babel/babel-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: babel-loader
on: [push, pull_request]
permissions:
contents: read # to fetch code (actions/checkout)
jobs:
test:
name: Test - ${{ matrix.os }} - Node ${{ matrix.node-version }}, Babel ${{ matrix.babel-version }}, Webpack ${{ matrix.webpack-version }}
strategy:
matrix:
os: [ubuntu-latest, windows-latest]
node-version: [22, 24]
babel-version: ["7", "8"]
webpack-version: ["5"]
include:
- node-version: "20"
webpack-version: "5"
babel-version: "7"
os: ubuntu-latest
- node-version: "18"
webpack-version: "5"
babel-version: "7"
os: ubuntu-latest
- node-version: "18"
webpack-version: "5"
babel-version: "7"
os: windows-latest
- node-version: "18.20.0" # The minimum supported node version
webpack-version: "5.61.0" # The minimum supported webpack version
babel-version: "7"
os: ubuntu-latest
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v3
- name: Use Node.js ${{ matrix.node-version }}
uses: actions/setup-node@v3
with:
node-version: ${{ matrix.node-version }}
cache: "yarn"
- name: Install dependencies
run: yarn
- name: Install webpack ${{ matrix.webpack-version }}
run: yarn add -D webpack@${{ matrix.webpack-version }}
- name: Downgrade to Babel 7
if: matrix.babel-version == '7'
run: yarn up @babel/*@^7
- name: Build babel-loader
run: yarn run build
- name: Run tests for webpack version ${{ matrix.webpack-version }}
run: yarn test-only
lint-coverage:
name: Lint and Coverage - ${{ matrix.os }} - Node ${{ matrix.node-version }}, Webpack 5
strategy:
matrix:
os: [ubuntu-latest]
node-version: [latest]
runs-on: ${{ matrix.os }}
steps:
- uses: actions/checkout@v3
- name: Use Node.js ${{ matrix.node-version }}
uses: actions/setup-node@v3
with:
node-version: ${{ matrix.node-version }}
cache: "yarn"
- name: Install dependencies
run: yarn
- name: Run tsc
run: yarn tsc
- name: Run lint and coverage tests
run: yarn test
- name: Submit coverage data to codecov
uses: codecov/codecov-action@v3
with:
token: ${{ secrets.CODECOV_TOKEN }}
The same workflow, on Latchkey
Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.
name: babel-loader on: [push, pull_request] permissions: contents: read # to fetch code (actions/checkout) concurrency: group: ${{ github.workflow }}-${{ github.ref }} cancel-in-progress: true jobs: test: timeout-minutes: 30 name: Test - ${{ matrix.os }} - Node ${{ matrix.node-version }}, Babel ${{ matrix.babel-version }}, Webpack ${{ matrix.webpack-version }} strategy: matrix: os: [ubuntu-latest, windows-latest] node-version: [22, 24] babel-version: ["7", "8"] webpack-version: ["5"] include: - node-version: "20" webpack-version: "5" babel-version: "7" os: ubuntu-latest - node-version: "18" webpack-version: "5" babel-version: "7" os: ubuntu-latest - node-version: "18" webpack-version: "5" babel-version: "7" os: windows-latest - node-version: "18.20.0" # The minimum supported node version webpack-version: "5.61.0" # The minimum supported webpack version babel-version: "7" os: ubuntu-latest runs-on: latchkey-small steps: - uses: actions/checkout@v3 - name: Use Node.js ${{ matrix.node-version }} uses: actions/setup-node@v3 with: node-version: ${{ matrix.node-version }} cache: "yarn" - name: Install dependencies run: yarn - name: Install webpack ${{ matrix.webpack-version }} run: yarn add -D webpack@${{ matrix.webpack-version }} - name: Downgrade to Babel 7 if: matrix.babel-version == '7' run: yarn up @babel/*@^7 - name: Build babel-loader run: yarn run build - name: Run tests for webpack version ${{ matrix.webpack-version }} run: yarn test-only lint-coverage: timeout-minutes: 30 name: Lint and Coverage - ${{ matrix.os }} - Node ${{ matrix.node-version }}, Webpack 5 strategy: matrix: os: [ubuntu-latest] node-version: [latest] runs-on: latchkey-small steps: - uses: actions/checkout@v3 - name: Use Node.js ${{ matrix.node-version }} uses: actions/setup-node@v3 with: node-version: ${{ matrix.node-version }} cache: "yarn" - name: Install dependencies run: yarn - name: Run tsc run: yarn tsc - name: Run lint and coverage tests run: yarn test - name: Submit coverage data to codecov uses: codecov/codecov-action@v3 with: token: ${{ secrets.CODECOV_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 useslatchkey-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.
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 2 jobs (9 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
Frequently asked questions
What does the babel-loader workflow (babel/babel-loader) workflow do?
This is the babel-loader workflow from the babel/babel-loader repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.
What CI health grade does this workflow get?
This Node.js workflow grades C. Paste your own workflow into the Latchkey grader to see its grade and the exact fixes.
How can I improve this Node.js workflow?
Apply run de-duplication, job timeouts, SHA-pinned actions. Latchkey applies these automatically on managed runners when you point runs-on at Latchkey.