Bundle Size workflow (axios/axios)

The Bundle Size workflow from axios/axios, explained and optimized by Latchkey.

CI health: D - needs work

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Source: axios/axios.github/workflows/bundle-size.ymlLicense MITView source

What it does

This is the Bundle Size workflow from the axios/axios 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: Bundle Size

on:
  pull_request:
    types:
      - opened
      - synchronize
      - reopened
permissions:
  contents: read

jobs:
  bundle-size:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repo
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false

      - name: Setup node
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version: 26.x
          registry-url: 'https://registry.npmjs.org'
          package-manager-cache: false

      - name: Install dependencies
        run: npm ci --ignore-scripts

      - name: Build project
        run: npm run build

      - name: Compare bundle size
        uses: axios/bundle-size@6940d767de28b002599d1ab36cc04748de2c49e7 # 0.2.0
        with:
          path: '.'
          package-name: axios
          files: |
            dist/axios.js
            dist/axios.min.js
            dist/browser/axios.cjs
            dist/esm/axios.js
            dist/esm/axios.min.js
            dist/node/axios.cjs
          output-file: bundle-size-comparison.json
          release-stream: '1'

      - name: Add bundle size report to summary
        if: always() && hashFiles('bundle-size-comparison.md') != ''
        run: cat bundle-size-comparison.md >> "$GITHUB_STEP_SUMMARY"

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: Bundle Size
 
on:
  pull_request:
    types:
      - opened
      - synchronize
      - reopened
permissions:
  contents: read
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  bundle-size:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - name: Checkout repo
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
 
      - name: Setup node
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          cache: 'npm'
          node-version: 26.x
          registry-url: 'https://registry.npmjs.org'
          package-manager-cache: false
 
      - name: Install dependencies
        run: npm ci --ignore-scripts
 
      - name: Build project
        run: npm run build
 
      - name: Compare bundle size
        uses: axios/bundle-size@6940d767de28b002599d1ab36cc04748de2c49e7 # 0.2.0
        with:
          path: '.'
          package-name: axios
          files: |
            dist/axios.js
            dist/axios.min.js
            dist/browser/axios.cjs
            dist/esm/axios.js
            dist/esm/axios.min.js
            dist/node/axios.cjs
          output-file: bundle-size-comparison.json
          release-stream: '1'
 
      - name: Add bundle size report to summary
        if: always() && hashFiles('bundle-size-comparison.md') != ''
        run: cat bundle-size-comparison.md >> "$GITHUB_STEP_SUMMARY"

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.
Cache dependency installs on the setup step so they are served from cache.
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 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