Anthropic's Claude Code CLI source code leaked onto GitHub recently. All of it. About 1,900 files and a lot of TypeScript.
I read through the key modules. What follows is a breakdown of the surprising parts: how the system actually works, where Anthropic made clever engineering choices, and where their approach diverges from OpenAI's Codex in ways you wouldn't guess from using either tool.
Here's what happens when you type a message into Claude Code:
| // Added ability to pass in options for testing-library/react | |
| // | |
| // Lifted from https://gist.github.com/tarunsahnan/93418e81882f2e343e09894bc6de6f35 on 2025-04-25 | |
| // Thread: https://github.com/testing-library/react-testing-library/issues/1209#issuecomment-2692563090 | |
| // | |
| // ORIGINAL BELOW | |
| // | |
| // While using [this solution](https://github.com/testing-library/react-testing-library/issues/1209#issuecomment-2400054404), | |
| // I encountered a timeout issue caused by API calls in my components. Each component was waiting for its | |
| // API call to complete before rendering, which led to delays and affected the flow to subsequent components. |
| # ==== scroll.janet ==== | |
| # | |
| # A quick-and-dirty implementation of "scrolling" window | |
| # managment, like PaperWM, for Jwno: https://github.com/agent-kilo/jwno. | |
| # | |
| # To test it out, put this file alongside your jwno-config.janet, | |
| # and add these in your config: | |
| # | |
| # (import scroll) | |
| # (def scroll (scroll/scroll jwno/context)) |
| { pkgs, lib, ... }: | |
| { | |
| # Runtime | |
| virtualisation.podman = { | |
| enable = true; | |
| autoPrune.enable = true; | |
| dockerCompat = true; | |
| defaultNetwork.settings = { | |
| # Required for container networking to be able to use names. |
| import type { PropsWithChildren, ReactElement, ReactNode } from 'react'; | |
| import React, { Children, cloneElement, isValidElement } from 'react'; | |
| import { render } from '@testing-library/react'; | |
| function setFakeReactDispatcher<T>(action: () => T): T { | |
| /** | |
| * We use some internals from React to avoid a lot of warnings in our tests when faking | |
| * to render server components. If the structure of React changes, this function should still work, | |
| * but the tests will again print warnings. |
| #!/bin/bash | |
| # Set script to exit on error | |
| set -e | |
| # Enable logging | |
| exec > >(tee -i /var/log/setup-script.log) | |
| exec 2>&1 | |
| echo "Starting script execution..." |
| // 3D Dom viewer, copy-paste this into your console to visualise the DOM as a stack of solid blocks. | |
| // You can also minify and save it as a bookmarklet (https://www.freecodecamp.org/news/what-are-bookmarklets/) | |
| (() => { | |
| const SHOW_SIDES = false; // color sides of DOM nodes? | |
| const COLOR_SURFACE = true; // color tops of DOM nodes? | |
| const COLOR_RANDOM = false; // randomise color? | |
| const COLOR_HUE = 190; // hue in HSL (https://hslpicker.com) | |
| const MAX_ROTATION = 180; // set to 360 to rotate all the way round | |
| const THICKNESS = 20; // thickness of layers | |
| const DISTANCE = 10000; // ¯\\_(ツ)_/¯ |
| #!/usr/bin/env -S bash -c "docker run -p 8080:8080 -it --rm \$(docker build --progress plain -f \$0 . 2>&1 | tee /dev/stderr | grep -oP 'sha256:[0-9a-f]*')" | |
| # syntax = docker/dockerfile:1.4.0 | |
| FROM node:20 | |
| WORKDIR /root | |
| RUN npm install sqlite3 |
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(updated May 2025)
The APs in this list are ordered from highest to lowest performance. However, unless you have a very high number of devices you likely do NOT need to buy the most expensive, highest performance AP. You can also check Ebay for deals, especially on older equipment.
All APs in this list support both wired backhaul and mesh modes. However, wired connections are strongly recommended for better performance and reliability.
Number of spatial streams are listed in order of 2.4GHz, 5GHz, 6GHz.
