How does FreeCodeCamp run/test our code

damod.d77 · February 11, 2023, 4:22am

How does FreeCodeCamp run/test our code. Does it run it in the backend? Does it run it inside the browser itself? I am trying to build something similar to the code runner so this information would help a lot. Thanks

Clement-Othniel · February 11, 2023, 4:56am

I think it is run in the backend

Sky020 · February 11, 2023, 1:41pm

Welcome there,

All of freeCodeCamp’s code is publicly visible and open-source:

The tests are run in different ways depending on which challenge you are referring to.

Most of the tests are simple Chaijs assertions running in the browser:

github.com

freeCodeCamp/freeCodeCamp/blob/main/client/src/client/workers/test-evaluator.ts

import chai from 'chai';
import '@babel/polyfill';
import { toString as __toString } from 'lodash-es';
import * as helpers from '@freecodecamp/curriculum-helpers';
import { format as __format } from '../../utils/format';

const ctx: Worker & typeof globalThis = self as unknown as Worker &
  typeof globalThis;

const __utils = (() => {
  const MAX_LOGS_SIZE = 64 * 1024;

  let logs: string[] = [];
  function flushLogs() {
    if (logs.length) {
      ctx.postMessage({
        type: 'LOG',
        data: logs.join('\n')
      });
      logs = [];

This file has been truncated. show original

Hope this helps

system · August 13, 2023, 1:42am

This topic was automatically closed 182 days after the last reply. New replies are no longer allowed.

Topic		Replies	Views
What package does freecodecamp use to test our code we enter? Contributors	2	281	August 31, 2023
General questions	2	354	April 6, 2022
How to run the test scripts for the beta challenges?	3	1015	January 17, 2021
freeCodeCamp tests? JavaScript	2	390	January 25, 2021
Complete exercises using locally running freeCodeCamp possible? Contributors	2	870	June 1, 2021

How does FreeCodeCamp run/test our code

Related topics