vite.config.js

import { svelte } from '@sveltejs/vite-plugin-svelte';
import { svelteTesting } from '@testing-library/svelte/vite';
import { configDefaults, defineConfig } from 'vitest/config';
import * as path from 'path';
import { fileURLToPath } from 'url';

let filename = fileURLToPath(import.meta.url);
const PACKAGE_ROOT = path.dirname(filename);

export default defineConfig({
	mode: process.env.MODE,
	root: PACKAGE_ROOT,
	resolve: process.env.VITEST
		? {
				conditions: ['browser'],
				alias: {
					'$lib/': path.join(PACKAGE_ROOT, 'src/lib') + '/'
				}
			}
		: {
				alias: {
					'$lib/': path.join(PACKAGE_ROOT, 'src/lib') + '/'
				}
			},
	plugins: [
		svelte({
			compilerOptions: {
				hmr: process.env.NODE_ENV !== 'production'
			}
		}),
		svelteTesting()
	],
	test: {
		// jest like globals
		globals: true,
		environment: 'happy-dom',
		// in-source testing
		includeSource: ['src/**/*.{js,ts,svelte}'],
		// Exclude files in c8
		coverage: {
			exclude: ['test/setupTest.ts']
		},
		setupFiles: ['./test/setupTest.ts'],
		// Exclude playwright tests folder
		exclude: [...configDefaults.exclude, 'tests','docs'],
		alias: [{ find: '@testing-library/svelte', replacement: '@testing-library/svelte/svelte5' }]
	},
	base: '',
	server: {
		fs: {
			strict: true
		}
	},
	build: {
		sourcemap: true,
		outDir: 'dist',
		assetsDir: '.',
		lib: {
			entry: 'src/lib/index.ts',
			formats: ['es']
		},

		emptyOutDir: true,
		reportCompressedSize: false
	}
});