vite.config.js

import { sveltekit } from '@sveltejs/kit/vite';
import svg from '@poppanator/sveltekit-svg';
import basicSsl from '@vitejs/plugin-basic-ssl';
import { defineConfig, loadEnv } from 'vite';
import { WorkerBuildPlugin } from './vite.worker-build-plugin';
import { lezer } from '@lezer/generator/rollup';

const config = ({ mode }) => {
  const viteEnvVars = loadEnv(mode, process.cwd());
  return defineConfig({
    build: {
      minify: true,
    },
    css: {
      devSourcemap: true,
    },
    plugins: [
      ...(viteEnvVars.VITE_HTTPS === 'true' ? [basicSsl()] : []),
      lezer(),
      sveltekit(),
      svg({
        svgoOptions: {
          multipass: true,
          plugins: [
            {
              name: 'preset-default',
              // by default svgo removes the viewBox which prevents svg icons from scaling
              // not a good idea! https://github.com/svg/svgo/pull/1461
              params: { overrides: { removeViewBox: false } },
            },
            {
              name: 'addClassesToSVGElement',
              params: {
                classNames: ['st-icon'],
              },
            },
          ],
        },
      }),
      WorkerBuildPlugin(
        ['./src/workers/customTS.worker.ts', './node_modules/monaco-editor/esm/vs/language/typescript/ts.worker.js'],
        {
          log: true,
        },
      ),
    ],
    server: {
      host: viteEnvVars.VITE_HOST ?? 'localhost',
    },
    test: {
      alias: [{ find: /^svelte$/, replacement: 'svelte/internal' }], // https://github.com/vitest-dev/vitest/issues/2834
      coverage: {
        exclude: ['src/routes/*'],
        include: ['src/**/*'],
        reporter: ['text', 'json', 'html'],
        reportsDirectory: './unit-test-results/coverage',
      },
      environment: 'jsdom',
      include: ['./src/**/*.test.ts'],
      outputFile: {
        html: 'unit-test-results/html-results/index.html',
        json: 'unit-test-results/json-results.json',
        junit: 'unit-test-results/junit-results.xml',
      },
      reporters: ['verbose', 'json', 'junit', 'html'],
    },
  });
};

export default config;