Node JS API `path.resolve` implement

pathReslove.ts

export default function pathResolve(...paths: string[]) {
  const parsedPaths = paths.flatMap((path) => path.split('/')).filter(Boolean);

  const resolvedPaths = parsedPaths.reduce((previousValue, path) => {
    if (path === '..') {
      previousValue.pop();
    } else {
      previousValue.push(path);
    }

    return previousValue;
  }, [] as string[]);

  return resolvedPaths.join('/');
}

pathResolve.test.ts

import { test, expect } from 'vitest';
import pathResolve from './pathResolve';

test('test pathResolve', () => {
  expect(pathResolve('home/one/two', '..')).toBe('home/one');
  expect(pathResolve('home/one/two', '../../')).toBe('home');
  expect(pathResolve('home/one/two', 'three')).toBe('home/one/two/three');
});