Tests: eslint (old versions) workflow (import-js/eslint-plugin-import)

The Tests: eslint (old versions) workflow from import-js/eslint-plugin-import, explained and optimized by Latchkey.

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Source: import-js/eslint-plugin-import.github/workflows/eslint-old.ymlLicense MITView source

What it does

This is the Tests: eslint (old versions) workflow from the import-js/eslint-plugin-import 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: 'Tests: eslint (old versions)'

on: [pull_request, push]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

permissions:
  contents: read

jobs:
  matrix:
    runs-on: ubuntu-latest
    outputs:
      latest: ${{ steps.set-matrix.outputs.requireds }}
      minors: ${{ steps.set-matrix.outputs.optionals }}
    steps:
      - uses: ljharb/actions/node/matrix@main
        id: set-matrix
        with:
          versionsAsRoot: true
          type: majors
          preset: '>= 6' # preset: '>=4' # see https://github.com/import-js/eslint-plugin-import/issues/2053

  latest:
    needs: [matrix]
    name: 'majors'
    runs-on: ${{ matrix.os }}

    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-latest
          - macos-latest
        node-version: ${{ fromJson(needs.matrix.outputs.latest) }}
        eslint:
          - 7
          - 6
          - 5
          - 4
          - 3
          - 2
        include:
          - node-version: 'lts/*'
            os: ubuntu-latest
            eslint: 7
            ts-parser: 4
            env:
              TS_PARSER: 4
          - node-version: 'lts/*'
            os: ubuntu-latest
            eslint: 7
            ts-parser: 3
            env:
              TS_PARSER: 3
          - node-version: 'lts/*'
            os: ubuntu-latest
            eslint: 7
            ts-parser: 2
            env:
              TS_PARSER: 2
        exclude:
          - node-version: 9
            eslint: 7
          - node-version: 8
            eslint: 7
          - node-version: 7
            eslint: 7
          - node-version: 7
            eslint: 6
          - node-version: 6
            eslint: 7
          - node-version: 6
            eslint: 6
          - node-version: 5
            eslint: 7
          - node-version: 5
            eslint: 6
          - node-version: 5
            eslint: 5
          - node-version: 4
            eslint: 7
          - node-version: 4
            eslint: 6
          - node-version: 4
            eslint: 5

    steps:
      - uses: actions/checkout@v4
      - uses: ljharb/actions/node/install@main
        continue-on-error: ${{ matrix.eslint == 4 && matrix.node-version == 4 }}
        name: 'nvm install ${{ matrix.node-version }} && npm install, with eslint ${{ matrix.eslint }}'
        env:
          NPM_CONFIG_LEGACY_PEER_DEPS: ${{ matrix.node-version == 11 && false || true }}
          ESLINT_VERSION: ${{ matrix.eslint }}
          TRAVIS_NODE_VERSION: ${{ matrix.node-version }}
        with:
          node-version: ${{ matrix.node-version }}
          after_install: npm run copy-metafiles && ./tests/dep-time-travel.sh
          skip-ls-check: true
      - run: npm run pretest
      - run: npm run tests-only
      - uses: codecov/codecov-action@v7.0.0

  node:
    name: 'eslint 2 - 7'
    needs: [latest]
    runs-on: ubuntu-latest
    steps:
      - run: true

The same workflow, on Latchkey

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

name: 'Tests: eslint (old versions)'
 
on: [pull_request, push]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
 
permissions:
  contents: read
 
jobs:
  matrix:
    timeout-minutes: 30
    runs-on: latchkey-small
    outputs:
      latest: ${{ steps.set-matrix.outputs.requireds }}
      minors: ${{ steps.set-matrix.outputs.optionals }}
    steps:
      - uses: ljharb/actions/node/matrix@main
        id: set-matrix
        with:
          versionsAsRoot: true
          type: majors
          preset: '>= 6' # preset: '>=4' # see https://github.com/import-js/eslint-plugin-import/issues/2053
 
  latest:
    timeout-minutes: 30
    needs: [matrix]
    name: 'majors'
    runs-on: ${{ matrix.os }}
 
    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-latest
          - macos-latest
        node-version: ${{ fromJson(needs.matrix.outputs.latest) }}
        eslint:
          - 7
          - 6
          - 5
          - 4
          - 3
          - 2
        include:
          - node-version: 'lts/*'
            os: ubuntu-latest
            eslint: 7
            ts-parser: 4
            env:
              TS_PARSER: 4
          - node-version: 'lts/*'
            os: ubuntu-latest
            eslint: 7
            ts-parser: 3
            env:
              TS_PARSER: 3
          - node-version: 'lts/*'
            os: ubuntu-latest
            eslint: 7
            ts-parser: 2
            env:
              TS_PARSER: 2
        exclude:
          - node-version: 9
            eslint: 7
          - node-version: 8
            eslint: 7
          - node-version: 7
            eslint: 7
          - node-version: 7
            eslint: 6
          - node-version: 6
            eslint: 7
          - node-version: 6
            eslint: 6
          - node-version: 5
            eslint: 7
          - node-version: 5
            eslint: 6
          - node-version: 5
            eslint: 5
          - node-version: 4
            eslint: 7
          - node-version: 4
            eslint: 6
          - node-version: 4
            eslint: 5
 
    steps:
      - uses: actions/checkout@v4
      - uses: ljharb/actions/node/install@main
        continue-on-error: ${{ matrix.eslint == 4 && matrix.node-version == 4 }}
        name: 'nvm install ${{ matrix.node-version }} && npm install, with eslint ${{ matrix.eslint }}'
        env:
          NPM_CONFIG_LEGACY_PEER_DEPS: ${{ matrix.node-version == 11 && false || true }}
          ESLINT_VERSION: ${{ matrix.eslint }}
          TRAVIS_NODE_VERSION: ${{ matrix.node-version }}
        with:
          node-version: ${{ matrix.node-version }}
          after_install: npm run copy-metafiles && ./tests/dep-time-travel.sh
          skip-ls-check: true
      - run: npm run pretest
      - run: npm run tests-only
      - uses: codecov/codecov-action@v7.0.0
 
  node:
    timeout-minutes: 30
    name: 'eslint 2 - 7'
    needs: [latest]
    runs-on: latchkey-small
    steps:
      - run: true

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.
Add a job timeout so a hung step cannot burn hours of runner time.

2 third-party actions are referenced by a movable tag. Pin them 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 3 jobs (14 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 codecov/codecov-action