import { fork } from 'node:child_process';
import { once } from 'node:events';
import { createRequire } from 'node:module';

const require = createRequire(import.meta.url);
const workerPath = require.resolve('#worker-process');

export async function main() {
    const worker = fork(workerPath);
    try {
        await new Promise<void>((done, fail) => {
            worker.send(Math.random(), err => err ? fail(err) : done());
        });
        const [response] = await once(worker, 'message');
        return response as number;
    } finally {
        worker.removeAllListeners();
        worker.disconnect();
        // worker.kill();
    }
}

process.on('message', async value => {
    await new Promise<void>((done, fail) => {
        process?.send?.(value, (err: unknown) => err ? fail(err) : done());
    });
    process.exit();
});

import { defineConfig } from 'vitest/config';

const esbuildOptions = Object.freeze({
    format: 'esm',
    // minify: true,
    sourcemap: true,
    target: 'node18',
    treeShaking: true,
});

export default defineConfig({
    esbuild: { ...esbuildOptions },
    resolve: {
        alias: [
            { find: /^#(.+)$/, replacement: './src/$1' },
        ],
    },
    test: {
        coverage: {
            provider: 'istanbul',
            // provider: 'v8',
        },
    },
});