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Accept Baselines, Fix Lints, and Format workflow (microsoft/TypeScript)

The Accept Baselines, Fix Lints, and Format workflow from microsoft/TypeScript, explained and optimized by Latchkey.

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Source: microsoft/TypeScript.github/workflows/accept-baselines-fix-lints.yamlLicense Apache-2.0View source

What it does

This is the Accept Baselines, Fix Lints, and Format workflow from the microsoft/TypeScript repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)
name: Accept Baselines, Fix Lints, and Format

on:
  workflow_dispatch: {}

permissions:
  contents: read
  id-token: write

# Ensure scripts are run with pipefail. See:
# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#exit-codes-and-error-action-preference
defaults:
  run:
    shell: bash

jobs:
  build:
    runs-on: ubuntu-latest
    environment:
      name: azure
      deployment: false

    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version: 'lts/*'

      - name: Configure Git, Run Tests, Update Baselines, Apply Fixes
        run: |
          git config user.email "290192711+typescript-automation[bot]@users.noreply.github.com"
          git config user.name "typescript-automation[bot]"
          npm ci
          git rm -r --quiet tests/baselines/reference
          npx hereby runtests-parallel --ci --fix || true
          npx hereby baseline-accept
          npx hereby format
          git add ./src
          git add ./tests/baselines/reference
          git diff --cached
          git commit -m "Update Baselines, Applied Lint Fixes, and/or Formatted"
      - uses: azure/login@532459ea530d8321f2fb9bb10d1e0bcf23869a43 # v3.0.0
        with:
          client-id: ${{ vars.AZURE_CLIENT_ID }}
          tenant-id: ${{ vars.AZURE_TENANT_ID }}
          subscription-id: ${{ vars.AZURE_SUBSCRIPTION_ID }}
      - name: Create GitHub App token
        id: app-token
        uses: microsoft/create-github-app-token-via-key-vault@5ba0d436e9c3cac52feff4d1f2f66f9698ce4a2d # v1
        with:
          client-id: ${{ vars.TYPESCRIPT_AUTOMATION_GITHUB_APP_CLIENT_ID }}
          key-id: ${{ vars.TYPESCRIPT_AUTOMATION_GITHUB_APP_KEY_ID }}
          owner: microsoft
          repositories: TypeScript
          permission-contents: write
      - name: Configure git for GitHub App token
        shell: bash
        env:
          GITHUB_APP_TOKEN: ${{ steps.app-token.outputs.token }}
        run: |
          set -euo pipefail
          basic_auth="$(node -e 'process.stdout.write(Buffer.from("x-access-token:" + process.env.GITHUB_APP_TOKEN).toString("base64"))')"
          echo "::add-mask::$basic_auth"
          git config --local http.https://github.com/.extraheader "AUTHORIZATION: basic ${basic_auth}"
      - run: git push

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: Accept Baselines, Fix Lints, and Format
 
on:
  workflow_dispatch: {}
 
permissions:
  contents: read
  id-token: write
 
# Ensure scripts are run with pipefail. See:
# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#exit-codes-and-error-action-preference
defaults:
  run:
    shell: bash
 
jobs:
  build:
    timeout-minutes: 30
    runs-on: latchkey-small
    environment:
      name: azure
      deployment: false
 
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          cache: 'npm'
          node-version: 'lts/*'
 
      - name: Configure Git, Run Tests, Update Baselines, Apply Fixes
        run: |
          git config user.email "290192711+typescript-automation[bot]@users.noreply.github.com"
          git config user.name "typescript-automation[bot]"
          npm ci
          git rm -r --quiet tests/baselines/reference
          npx hereby runtests-parallel --ci --fix || true
          npx hereby baseline-accept
          npx hereby format
          git add ./src
          git add ./tests/baselines/reference
          git diff --cached
          git commit -m "Update Baselines, Applied Lint Fixes, and/or Formatted"
      - uses: azure/login@532459ea530d8321f2fb9bb10d1e0bcf23869a43 # v3.0.0
        with:
          client-id: ${{ vars.AZURE_CLIENT_ID }}
          tenant-id: ${{ vars.AZURE_TENANT_ID }}
          subscription-id: ${{ vars.AZURE_SUBSCRIPTION_ID }}
      - name: Create GitHub App token
        id: app-token
        uses: microsoft/create-github-app-token-via-key-vault@5ba0d436e9c3cac52feff4d1f2f66f9698ce4a2d # v1
        with:
          client-id: ${{ vars.TYPESCRIPT_AUTOMATION_GITHUB_APP_CLIENT_ID }}
          key-id: ${{ vars.TYPESCRIPT_AUTOMATION_GITHUB_APP_KEY_ID }}
          owner: microsoft
          repositories: TypeScript
          permission-contents: write
      - name: Configure git for GitHub App token
        shell: bash
        env:
          GITHUB_APP_TOKEN: ${{ steps.app-token.outputs.token }}
        run: |
          set -euo pipefail
          basic_auth="$(node -e 'process.stdout.write(Buffer.from("x-access-token:" + process.env.GITHUB_APP_TOKEN).toString("base64"))')"
          echo "::add-mask::$basic_auth"
          git config --local http.https://github.com/.extraheader "AUTHORIZATION: basic ${basic_auth}"
      - run: git push

What changed

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:

This workflow runs 1 job 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 azure/login