bundle-diff.yml

name: Bundle Size Difference

on:
  pull_request:
    branches:
      - "main"

jobs:
  build-pr:
    name: "Build PR stats"
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Setup node
        uses: actions/setup-node@v3
        with:
          node-version: 16

      - uses: pnpm/action-setup@v2.0.1
        name: Install pnpm
        id: pnpm-install
        with:
          version: 8
          run_install: false

      - name: Get pnpm store directory
        id: pnpm-cache
        run: |
          echo "::set-output name=pnpm_cache_dir::$(pnpm store path)"

      - uses: actions/cache@v3
        name: Setup pnpm cache
        with:
          path: ${{ steps.pnpm-cache.outputs.pnpm_cache_dir }}
          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
          restore-keys: |
            ${{ runner.os }}-pnpm-store-

      - name: Install dependencies
        run: rm -rf node_modules && pnpm i --frozen-lockfile

      - name: Build
        run: ANALYZE=true pnpm build
        env:
          NEXT_PUBLIC_GITHUB_TOKEN: ${{ secrets.BOTGITHUBTOKEN }}

      - name: Upload stats.json
        uses: actions/upload-artifact@v2
        with:
          name: pr
          path: .next/stats.json

  build-base:
    name: "Build base stats"
    runs-on: ubuntu-latest
    steps:
      - name: Checkout base branch
        uses: actions/checkout@v3
        with:
          ref: ${{ github.base_ref }}

      - name: Setup node
        uses: actions/setup-node@v3
        with:
          node-version: 16

      - uses: pnpm/action-setup@v2.0.1
        name: Install pnpm
        id: pnpm-install
        with:
          version: 8
          run_install: false

      - name: Get pnpm store directory
        id: pnpm-cache
        run: |
          echo "::set-output name=pnpm_cache_dir::$(pnpm store path)"

      - uses: actions/cache@v3
        name: Setup pnpm cache
        with:
          path: ${{ steps.pnpm-cache.outputs.pnpm_cache_dir }}
          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
          restore-keys: |
            ${{ runner.os }}-pnpm-store-

      - name: Install dependencies
        run: rm -rf node_modules && pnpm i --frozen-lockfile

      - name: Build
        run: ANALYZE=true pnpm build
        env:
          NEXT_PUBLIC_GITHUB_TOKEN: ${{ secrets.BOTGITHUBTOKEN }}

      - name: Upload stats.json
        uses: actions/upload-artifact@v2
        with:
          name: base
          path: .next/stats.json

  compare:
    name: "Compare base & head bundle sizes"
    runs-on: ubuntu-latest
    needs: [build-pr, build-base]
    steps:
      - name: Checkout PR
        uses: actions/checkout@v3

      - name: Download base artifact
        uses: actions/download-artifact@v2
        with:
          name: base
          path: base

      - name: Download PR stats
        uses: actions/download-artifact@v2
        with:
          name: pr
          path: pr

      - name: Get diff
        id: get-diff
        uses: NejcZdovc/bundle-size-diff@v1
        with:
          base_path: "./base/stats.json"
          pr_path: "./pr/stats.json"

      - name: Comment
        uses: NejcZdovc/comment-pr@v1.1.1
        with:
          file: "../templates/webpack-diff-comment.md"
        env:
          GITHUB_TOKEN: ${{secrets.BOTGITHUBTOKEN}}
          OLD: ${{steps.get-diff.outputs.base_file_string}}
          NEW: ${{steps.get-diff.outputs.pr_file_string}}
          DIFF: ${{steps.get-diff.outputs.diff_file_string}}
          DIFF_PERCENT: ${{steps.get-diff.outputs.percent}}