'use strict';
const path = require('path');
const resolveFrom = require('resolve-from');
const parentModule = require('parent-module');

module.exports = moduleId => {
    if (typeof moduleId !== 'string') {
        throw new TypeError('Expected a string');
    }

    const parentPath = parentModule(__filename);

    const cwd = parentPath ? path.dirname(parentPath) : __dirname;
    const filePath = resolveFrom(cwd, moduleId);

    const oldModule = require.cache[filePath];
    // Delete itself from module parent
    if (oldModule && oldModule.parent) {
        let i = oldModule.parent.children.length;

        while (i--) {
            if (oldModule.parent.children[i].id === filePath) {
                oldModule.parent.children.splice(i, 1);
            }
        }
    }

    delete require.cache[filePath]; // Delete module from cache

    const parent = require.cache[parentPath]; // If `filePath` and `parentPath` are the same, cache will already be deleted so we won't get a memory leak in next step

    return parent === undefined ? require(filePath) : parent.require(filePath); // In case cache doesn't have parent, fall back to normal require
};