utils.js

import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

/** @param {string} dir */
export function mkdirp(dir) {
	try {
		fs.mkdirSync(dir, { recursive: true });
	} catch (e) {
		if (e.code === 'EEXIST') return;
		throw e;
	}
}

/** @param {string} path */
export function rimraf(path) {
	(fs.rmSync || fs.rmdirSync)(path, { recursive: true, force: true });
}

/**
 * @template T
 * @param {T} x
 */
function identity(x) {
	return x;
}

export function copy(from, to, rename = identity) {
    if (!fs.existsSync(from)) return;
    
    const stack = [{ from, to }];
    
    while (stack.length > 0) {
        const { from, to } = stack.pop();
        const stats = fs.statSync(from);
    
        if (stats.isDirectory()) {
            mkdirp(to);
            fs.readdirSync(from).forEach((name) => {
                stack.push({
                    from: path.join(from, name),
                    to: path.join(to, rename(name)),
                });
            });
        } else {
            mkdirp(path.dirname(to));
            fs.copyFileSync(from, to);
        }
    }
}

export function dist(path) {
    return fileURLToPath(new URL(`./${path}`, import.meta.url).href);
}