compressed-size workflow (preactjs/wmr)

The compressed-size workflow from preactjs/wmr, explained and optimized by Latchkey.

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Source: preactjs/wmr.github/workflows/compressed-size.ymlLicense MITView source

What it does

This is the compressed-size workflow from the preactjs/wmr 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: compressed-size
on:
  pull_request:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - uses: dorny/paths-filter@v2
        id: filter
        with:
          filters: |
            wmr:
              - 'packages/wmr/**'
              - 'examples/demo/**'
            preact-iso:
              - 'packages/preact-iso/**'

      - name: compressed-size-action
        if: ${{ steps.filter.outputs.wmr == 'true' }}
        uses: preactjs/compressed-size-action@v2
        with:
          pattern: '{packages/wmr/wmr.cjs,examples/demo/dist/**/*.{js,css,html}}'
          build-script: ci
          strip-hash: "\\.(\\w{8})\\.(?:js|css)$"
          repo-token: '${{ secrets.GITHUB_TOKEN }}'

      - name: compressed-size-action
        if: ${{ steps.filter.outputs.preact-iso == 'true' }}
        uses: preactjs/compressed-size-action@v2
        with:
          pattern: '{packages/preact-iso/*.js,packages/preact-iso/.dist/*.js}'
          build-script: 'iso test-build'
          strip-hash: "\\.(\\w{8})\\.js$"
          repo-token: '${{ secrets.GITHUB_TOKEN }}'

The same workflow, on Latchkey

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

name: compressed-size
on:
  pull_request:
    branches:
      - main
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v2
 
      - uses: dorny/paths-filter@v2
        id: filter
        with:
          filters: |
            wmr:
              - 'packages/wmr/**'
              - 'examples/demo/**'
            preact-iso:
              - 'packages/preact-iso/**'
 
      - name: compressed-size-action
        if: ${{ steps.filter.outputs.wmr == 'true' }}
        uses: preactjs/compressed-size-action@v2
        with:
          pattern: '{packages/wmr/wmr.cjs,examples/demo/dist/**/*.{js,css,html}}'
          build-script: ci
          strip-hash: "\\.(\\w{8})\\.(?:js|css)$"
          repo-token: '${{ secrets.GITHUB_TOKEN }}'
 
      - name: compressed-size-action
        if: ${{ steps.filter.outputs.preact-iso == 'true' }}
        uses: preactjs/compressed-size-action@v2
        with:
          pattern: '{packages/preact-iso/*.js,packages/preact-iso/.dist/*.js}'
          build-script: 'iso test-build'
          strip-hash: "\\.(\\w{8})\\.js$"
          repo-token: '${{ secrets.GITHUB_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 uses latchkey-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.

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.

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 dorny/paths-filter