build-frontend.yaml

name: build-frontend

on:
  push:
    branches:
      - 'master'
      - 'main'
    tags:
      - 'v*'
  pull_request:
  merge_group:
  workflow_dispatch:
    inputs:
      git-ref:
        description: 'Git ref (optional)'
        required: false

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
        with:
          # This repo has tons of cruft in its history, so we try to only fetch files we actually need:
          fetch-depth: 0
          filter: 'blob:none'

      - name: Use cached ~/.npm
        uses: actions/cache@v4
        with:
          path: ~/.npm
          key: ${{ runner.os }}-node-${{ matrix.variant }}-${{ hashFiles('**/package-lock.json') }}
          restore-keys: ${{ runner.os }}-node

      - name: Install build dependencies
        working-directory: ./frontend
        run: npm install

      - name: Build
        working-directory: ./frontend
        run: |
          export NODE_OPTIONS=--max_old_space_size=4096
          CI=false npm run build

      - name: Upload build output
        uses: actions/upload-artifact@v4
        with:
          name: frontend
          path: ./frontend/build