bundle-size.yml

name: Size

on:
  pull_request:
    branches:
      - main

jobs:
  size:
    name: Report bundle and install size
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - name: Checkout base branch
        uses: actions/checkout@v3
        with:
          ref: ${{ github.base_ref }}

      - name: Setup Bun
        uses: oven-sh/setup-bun@v1
        with:
          bun-version: latest

      - name: Install dependencies (base)
        run: bun install

      - name: Build (base)
        run: bun run build

      - name: Get base bundle size
        id: base-bundle-size
        run: |
          echo "base=$(du -sh dist | cut -f1)" >> $GITHUB_OUTPUT

      - name: Get base install size
        id: base-install-size
        run: |
          echo "base=$(bunx howfat -r simple . | grep 'Size:' | awk '{print $2}')" >> $GITHUB_OUTPUT

      - name: Checkout PR branch
        uses: actions/checkout@v3

      - name: Install dependencies (PR)
        run: bun install

      - name: Build (PR)
        run: bun run build

      - name: Get PR bundle size
        id: pr-bundle-size
        run: |
          echo "pr=$(du -sh dist | cut -f1)" >> $GITHUB_OUTPUT

      - name: Get PR install size and full howfat output
        id: pr-install-size
        run: |
          echo "pr=$(bunx howfat -r simple . | grep 'Size:' | awk '{print $2}')" >> $GITHUB_OUTPUT
          echo "full_output<<EOF" >> $GITHUB_OUTPUT
          bunx howfat -r table . >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT

      - name: Calculate bundle size difference
        id: bundle-size-diff
        run: |
          base_size=$(echo ${{ steps.base-bundle-size.outputs.base }} | sed 's/[^0-9.]*//g')
          pr_size=$(echo ${{ steps.pr-bundle-size.outputs.pr }} | sed 's/[^0-9.]*//g')
          diff=$(echo "$pr_size - $base_size" | bc)
          if (( $(echo "$diff > 0" | bc -l) )); then
            echo "diff=+$diff" >> $GITHUB_OUTPUT
          else
            echo "diff=$diff" >> $GITHUB_OUTPUT
          fi

      - name: Calculate install size difference
        id: install-size-diff
        run: |
          base_size=$(echo ${{ steps.base-install-size.outputs.base }} | sed 's/[^0-9.]*//g')
          pr_size=$(echo ${{ steps.pr-install-size.outputs.pr }} | sed 's/[^0-9.]*//g')
          diff=$(echo "$pr_size - $base_size" | bc)
          if (( $(echo "$diff > 0" | bc -l) )); then
            echo "diff=+$diff" >> $GITHUB_OUTPUT
          else
            echo "diff=$diff" >> $GITHUB_OUTPUT
          fi

      - name: Update comment
        uses: marocchino/sticky-pull-request-comment@v2
        with:
          GITHUB_TOKEN: ${{ secrets.TSCIRCUIT_BOT_GITHUB_TOKEN }}
          header: Size Report
          message: |
            ## Size Report
            ### Bundle Size
            - Base branch size: ${{ steps.base-bundle-size.outputs.base }}
            - PR branch size: ${{ steps.pr-bundle-size.outputs.pr }}
            - Difference: ${{ steps.bundle-size-diff.outputs.diff }}

            ### Install Size
            - Base branch size: ${{ steps.base-install-size.outputs.base }}
            - PR branch size: ${{ steps.pr-install-size.outputs.pr }}
            - Difference: ${{ steps.install-size-diff.outputs.diff }}

            ### Full Howfat Output (PR Branch)
            ```
            ${{ steps.pr-install-size.outputs.full_output }}
            ```