Bundle size reporter github action

Action for reporting bundle size difference. Works with bundle size json report files (rollup-plugin-size-snapshot) or actual files. Check reports and tests folder in the repository for examples.

Inputs

paths - [Required] Paths to bundle size json files or folder containing files. Comma separated list.

onlyDiff - Report only differences. Default "true".

filter - Regex filter based on file path.

unit - Size unit. Default "KB". Options "B","KB","MB","GB","TB","PB","EB","ZB","YB"

Outputs

summary - string Table of bundle size differences in markdown format.

reports - object All file/bundle reports.

hasDifferences - boolean Did any bundle size change

Usage

- name: Checkout branch
  uses: actions/checkout@v3
  with:
    ref: 'test' # branch to compare to
    path: br-base # required
    token: ${{ secrets.GITHUB_TOKEN }}

- name: Bundle size report
  uses: nejcm/bundle-size-reporter-action@v1.2.1
  with:
    paths: 'reports/**/*.json,assets/*'
    onlyDiff: 'true'
    filter: '.*\\.esm\\.js'

Putting ~ in front of the path will combine all files under that folder and just calculate the total sum. Usefull when generated files inside the folder have hash names that change each time.

- name: Checkout branch
  uses: actions/checkout@v3
  with:
    ref: 'master' # branch to compare to
    path: br-base # required
    token: ${{ secrets.GITHUB_TOKEN }}

- name: Bundle size report
  uses: nejcm/bundle-size-reporter-action@v1.2.1
  with:
    paths: '~static/*'

Github composite action

This useful composite action will calculate bundle size difference, post a github action summary and a PR comment. First two steps are required but the others can be customized based on your needs.

name: 'Bundle size reporter'
description: 'Post bundle size difference compared to another branch'
inputs:
  branch:
    description: 'Branch to compare to'
    required: true
    default: 'main'
  paths:
    description:
      'Paths to json file bundle size report or folder containing bundles'
    required: true
    default: '/'
  onlyDiff:
    description: 'Report only different sizes'
    required: false
    default: 'false'
  filter:
    description: 'Regex filter based on file path'
    required: false
  unit:
    description: 'Size unit'
    required: false
    default: 'KB'

  # Comment inputs
  comment:
    description: 'Post comment'
    required: false
    default: 'true'
  header:
    description: 'Comment header'
    required: false
    default: 'Bundle size report'
  append:
    description: 'Append comment'
    required: false
    default: 'false'
  ghToken:
    description: 'Github token'
    required: false

runs:
  using: 'composite'
  steps:
    # Checkout branch to compare to [required]
    - name: Checkout base branch
      uses: actions/checkout@v3
      with:
        ref: ${{ inputs.branch }}
        path: br-base
        token: ${{ inputs.ghToken }}

    # Generate the bundle size difference report [required]
    - name: Generate report
      id: bundleSize
      uses: nejcm/bundle-size-reporter-action@v1.4.1
      with:
        paths: ${{ inputs.paths }}
        onlyDiff: ${{ inputs.onlyDiff }}
        filter: ${{ inputs.filter }}
        unit: ${{ inputs.unit }}

    # Post github action summary
    - name: Post summary
      if: ${{ steps.bundleSize.outputs.hasDifferences == 'true' }} # post only in case of changes
      run: |
        echo '${{ steps.bundleSize.outputs.summary }}' >> $GITHUB_STEP_SUMMARY
      shell: bash

    # Post github action comment
    - name: Post comment
      uses: marocchino/sticky-pull-request-comment@v2
      if: ${{ steps.bundleSize.outputs.hasDifferences == 'true' }} # post only in case of changes
      with:
        number: ${{ github.event.pull_request.number }}
        header: ${{ inputs.header }}
        append: ${{ inputs.append }}
        message: '${{ steps.bundleSize.outputs.summary }}'
        GITHUB_TOKEN: ${{ inputs.ghToken }}

Using composite action

- name: 📄 Bundle size report
  uses: ./.github/actions/bundle-size # path to composite action
  with:
    paths: 'reports/**/*.json'
    onlyDiff: 'true'
    branch: 'develop' # branch to compare to
    header: 'Bundle size report' # PR comment header
    ghToken: ${{ secrets.GITHUB_TOKEN }} # github token

Example