A github action that reports changes in compressed file sizes on your PRs.

• Automatically uses yarn or npm ci when lockfiles are present
• Builds your PR, then builds the target and compares between the two
• Doesn't upload anything or rely on centralized storage

Add a workflow (.github/workflows/main.yml):

name: Compressed Size

on: [pull_request]

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2-beta
      with:
        fetch-depth: 1
    - uses: preactjs/compressed-size-action@v1
      with:
        repo-token: "${{ secrets.GITHUB_TOKEN }}"