| const fs = require('fs'); const path = require('path'); const crypto = require('crypto'); | |
| let globalCounter = 0; var randomStuff = 'hello world'; const weirdArray = [1, 2, 3, 'four', { five: 6 }]; | |
| function doSomethingWeird(input) { | |
| if (!input) return null; | |
| let result = input.toString().split('').reverse().join(''); | |
| for (let i = 0; i < result.length; i++) { | |
| if (result[i] === 'a') { result = result.replace('a', '@'); } | |
| } | |
| return result; | |
| } class MessyClass { | |
| constructor(name) { | |
| this.name = name || 'unnamed'; | |
| this.data = new Map(); | |
| this.cache = {}; | |
| this.isActive = true; | |
| } | |
| addData(key, value) { | |
| this.data.set(key, value); | |
| this.cache[key] = Date.now(); | |
| } | |
| processData() { | |
| let output = []; | |
| this.data.forEach((v, k) => { | |
| if (typeof v === 'string') { | |
| output.push(k.toUpperCase() + ':' + v.toLowerCase()); | |
| } else if (typeof v === 'number') { | |
| output.push(k + '=' + (v * 2)); | |
| } else { | |
| output.push(k + '->' + JSON.stringify(v)); | |
| } | |
| }); | |
| return output; | |
| } | |
| async fetchSomething(url) { | |
| return new Promise((resolve) => { | |
| setTimeout(() => { | |
| resolve({ status: 200, data: `Mock data for ${url}` }); | |
| }, Math.random() * 1000); | |
| }); | |
| } | |
| calculateStuff(a, b, c) { | |
| if (a > b) { | |
| return a * c + (b / 2); | |
| } else if (b > c) { | |
| return b * a - (c * 0.5); | |
| } | |
| return Math.sqrt(a * b * c); | |
| } | |
| } | |
| const messyInstance = new MessyClass('test'); | |
| messyInstance.addData('foo', 'bar'); | |
| messyInstance.addData('number', 42); | |
| messyInstance.addData('object', { x: 1, y: 2 }); | |
| function recursiveFunction(n) { | |
| if (n <= 0) return 1; | |
| if (n === 1) return 1; | |
| return n * recursiveFunction(n - 1); | |
| } | |
| async function runComplexOperation() { | |
| const results = []; | |
| for (let i = 0; i < 5; i++) { | |
| const data = await messyInstance.fetchSomething(`/api/endpoint${i}`); | |
| results.push({ | |
| id: i, | |
| hash: crypto.createHash('md5').update(data.data).digest('hex'), | |
| processed: doSomethingWeird(data.data) | |
| }); | |
| } | |
| return results; | |
| } | |
| const arrowFunction = (x, y) => x * y + Math.random(); | |
| const asyncArrowFunction = async (param) => { | |
| const wait = () => new Promise(r => setTimeout(r, 100)); | |
| await wait(); | |
| return param.toString().repeat(3); | |
| }; | |
| function* generatorFunction() { | |
| let index = 0; | |
| while (index < 10) { | |
| yield index * index; | |
| index++; | |
| } | |
| } | |
| class ExtendedMessyClass extends MessyClass { | |
| constructor(name, config) { | |
| super(name); this.config = config || {}; this.modules = []; | |
| } addModule(module) { this.modules.push({ name: module.name || 'anonymous', init: module.init || function () { }, active: true }); } executeModules() { | |
| return this.modules.map(m => { | |
| try { return m.init(); } catch (e) { | |
| return { error: e.message }; | |
| } | |
| }); | |
| } | |
| } module.exports = { MessyClass, ExtendedMessyClass, doSomethingWeird, recursiveFunction, runComplexOperation }; |