pkg-size action

pkg-size-action is a GitHub Action for getting automated size reports on your pull-requests.

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⭐️ Features

📦 Auto-detects npm distribution assets using pkg-size
🔥 Node.js package installer agnostic Supports auto lock-file installs from npm, yarn, pnpm
🗜 See compression sizes Option to show uncompressed, Gzip, and Brotli size
⚙️ Configurable Change the build command. Customize reports formats. Filter out unwanted files.

🚦 3-step setup

Create the following file in your repo: .github/workflows/package-size-report.yml:

name: Package Size Report

on:
  pull_request:
    branches: [ master, develop ] # ⬅ Add other branches you want size checks on

jobs:
  pkg-size-report:
    name: Package Size Report
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Setup Node.js
        uses: actions/setup-node@v2
        with:
          node-version: '14' # ⬅ Specify a version of Node.js to build your app

      - name: Package size report
        uses: pkg-size/action@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Try making a PR against one of the designated branches.
📊 Get the pkg-size report as a comment on the PR!

You'll see a comment on your PR reporting the package size regression. This comment will be automatically updated as you push changes to your PR.

👨🏻‍🏫 Examples

Set a custom command to build

The default behavior detects whether npm run build exists. If not, it assumes your repo doesn't have a build step and won't try to install dependencies.

If your repo has a different build script, specify one with build-command. Disable building by passing in false.

name: Package Size Report

on:
  pull_request:
    branches: [ master, develop ]

jobs:
  pkg-size-report:
    name: Package Size Report
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Setup Node.js
        uses: actions/setup-node@v2
        with:
          node-version: '14'

      - name: Package size report
        uses: pkg-size/action@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          build-command: npm run prod-build # ⬅ Set a different build script here

Specify node version

By default, ubuntu-latest has the latest version of node available. If your repo needs to specify an exact version of node, you can use the actions/setup-node action.

name: Package Size Report

on:
  pull_request:
    branches: [ master, develop ]

jobs:
  pkg-size-report:
    name: Package Size Report
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Use Node.js
        uses: actions/setup-node@v2
        with:
          node-version: '14.4.0'

      - name: Package size report
        uses: pkg-size/action@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Hiding source-map changes from report

Source-maps might add unnecessary noise to your report. Hide them using a glob.

name: Package Size Report

on:
  pull_request:
    branches: [ master, develop ]

jobs:
  pkg-size-report:
    name: Package Size Report
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Setup Node.js
        uses: actions/setup-node@v2
        with:
          node-version: '14'

      - name: Package size report
        uses: pkg-size/action@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          hide-files: '*.{js,css}.map' # Set a glob to filter out irrelevant files

Show unchanged & changed files in the same table

The default behavior hides unchanged files in a collapsible. To include unchanged files in the visible table, set unchanged-files to show.

name: Package Size Report

on:
  pull_request:
    branches: [ master, develop ]

jobs:
  pkg-size-report:
    name: Package Size Report
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Setup Node.js
        uses: actions/setup-node@v2
        with:
          node-version: '14'

      - name: Package size report
        uses: pkg-size/action@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          unchanged-files: show # ⬅ Make unchanged files appear in the same table

Use Brotli size

Use display-size: brotli to only show Brotli compression size. Use a comma separated list to show multiple sizes.

name: Package Size Report

on:
  pull_request:
    branches: [ master, develop ]

jobs:
  pkg-size-report:
    name: Package Size Report
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v2

      - name: Setup Node.js
        uses: actions/setup-node@v2
        with:
          node-version: '14'

      - name: Package size report
        uses: pkg-size/action@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          display-size: uncompressed, brotli # ⬅ Comma separated list of sizes to show

⚙️ Options

build-command

Default: npm run build if it exists in package.json, otherwise false.

Command to build the package and produce distribution files with. Pass in false to disable attempting to produce a build.

comment-report

Default: true

Possible values: true, false

Whether to comment the build size report on the PR or not.

mode

Default: regression

Possible values: regression, head-only

Sets the size report mode:

regression: Builds both head and base branch and compares difference.
head-only: Only builds and reports on head branch.

display-size

Default: uncompressed

Possible values: uncompressed, gzip, brotli

Which size to show. Pass in a comma-separated list for multiple.

unchanged-files

Default: collapse

Possible values: show, collapse, hide

Whether to show unchanged files.

sort-by

Default: delta

Possible values: delta, headSize, baseSize, path

Which property to sort the files list by. delta is the size difference.

sort-order

Default: desc

Possible values: desc, asc

Files list sort order.

hide-files

Glob pattern to hide files. For example, if you want to hide source-maps:

hide-files: '*.{js,css}.map'

💁‍♀️ FAQ

Can I use this for non-published projects?

Yes. All you need to do is specify distribution files in the files array in package.json.

How is this different from size-limit-action?

size-limit-action approaches size monitoring from a budgeting standpoint, and has features such as rejecting PRs if the proposed changes are too large. It requires specifying each distribution file and doesn't show compression sizes.

pkg-size-action accepts that size increases can be often warranted if the feature/bug-fix is important, and approaches monitoring from a purely informational standpoint. It encourages being size conscious without blocking your changes. pkg-size-action can also automatically detect distribution files based on your package.json configuration.

💼 License

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