import { resolve } from 'path'
import react from '@vitejs/plugin-react'
import { configDefaults, defineConfig } from 'vitest/config'

export default defineConfig({
	// vite 8 / vitest 4 transform with oxc and ignore the deprecated `esbuild.jsx`
	// option, and this app's tsconfig uses `jsx: preserve` for its real build. Use
	// the react plugin so JSX in `.tsx` files is transformed for tests.
	plugins: [react()],
	test: {
		fsModuleCache: true,
		pool: 'threads',
		environment: 'jsdom',
		setupFiles: ['./setupTests.js'],
		globals: true,
		testTimeout: 30000,
		include: ['**/*.{test,spec}.{js,ts,jsx,tsx}'],
		// Extend the defaults rather than replace them: dropping `**/node_modules/**` runs the tests
		// of every workspace package linked into this app's node_modules (pnpm's linker does that).
		exclude: [...configDefaults.exclude, '**/e2e/**'],
	},
	resolve: {
		alias: {
			'\\.(css|less)$': 'identity-obj-proxy',
			// `tldraw/tldraw.css` is generated by packages/tldraw's prebuild/predev and gitignored, so
			// it is absent unless something has built that package — and the checks job runs the unit
			// tests without doing so. Any test importing a module that pulls in the SDK stylesheet
			// would fail to resolve it. Pointed at one of the sources that file is concatenated from:
			// vitest does not process CSS, so only the resolution matters.
			'tldraw/tldraw.css': resolve(__dirname, '../../../packages/tldraw/src/lib/ui.css'),
		},
	},
	ssr: {
		noExternal: ['@tiptap/react'],
	},
})