iambumblehead

hi, i'm daniel. i'm a 15-year-old with some programming experience and i do a little bug hunting in my free time. here's the insane story of how I found a single bug that affected over half of all Fortune 500 companies:

say hello to zendesk

If you've spent some time online, you’ve probably come across Zendesk.

Zendesk is a customer service tool used by some of the world’s top companies. It’s easy to set up: you link it to your company’s support email (like [email protected]), and Zendesk starts managing incoming emails and creating tickets. You can handle these tickets yourself or have a support team do it for you. Zendesk is a billion-dollar company, trusted by big names like Cloudflare.

Personally, I’ve always found it surprising that these massive companies, worth billions, rely on third-party tools like Zendesk instead of building their own in-house ticketing systems.

your weakest link

ES Modules are terrible, actually

This post was adapted from an earlier Twitter thread.

It's incredible how many collective developer hours have been wasted on pushing through the turd that is ES Modules (often mistakenly called "ES6 Modules"). Causing a big ecosystem divide and massive tooling support issues, for... well, no reason, really. There are no actual advantages to it. At all.

It looks shiny and new and some libraries use it in their documentation without any explanation, so people assume that it's the new thing that must be used. And then I end up having to explain to them why, unlike CommonJS, it doesn't actually work everywhere yet, and may never do so. For example, you can't import ESM modules from a CommonJS file! (Update: I've released a module that works around this issue.)

And then there's Rollup, which apparently requires ESM to be u

GraphQL introspection query via curl

cat introspection_query.json

{ 
  "query": "query IntrospectionQuery {
      __schema {
        queryType { name }
        mutationType { name }

#Understanding Cross-browser Scripting

Cross-browser was invented around the turn of the century and is needed more today than ever. Unfortunately, it is also massively misunderstood, both by library developers and their users.

##What Cross-Browser Scripting is Not

Before getting into what cross-browser scripting is, let's look at what it is not. Cross-browser scripting does not imply that scripts will work in every browser and configuration known to man. Certainly a script that does work in every conceivable environment would be considered cross-browser, but such expectations are neither realistic, nor a requirement for a script to be considered cross-browser.

Depsite marketing claims, popular libraries such as jQuery and Lodash are neither cross-browser nor cross-platform. It's critical to understand that they are multi-browser and multi-platform, working in a handful of environments deemed worthy by their authors at the time of each version release. Th

Regular Expression Engine Comparison Chart

Many different applications claim to support regular expressions. But what does that even mean?

Well there are lots of different regular expression engines, and they all have different feature sets and different time-space efficiencies.

The information here is just copied from: http://regular-expressions.mobi/refflavors.html

	.pikaday-dark {
	--backgroundColor: #2d3748;
	--textColor: #f7fafc;
	--currentDateTextColor: #3182ce;
	--selectedDateBackgroundColor: #3182ce;
	--selectedDateTextColor: #f7fafc;

	--labelTextColor: #3182ce; /* eg. May 2020 */
	--weekDaysTextColor: #a0aec0; /* eg. Mo Tu We ....*/

	// Needs a running Chrome Headless, eg:
	// /Applications/Google\ Chrome\ Canary.app/Contents/MacOS/Google\ Chrome\ Canary --headless --remote-debugging-port=9222 https://chromium.org
	// Run with node, eg `node render.js output.html`

	const CDP = require('chrome-remote-interface');
	const fs = require('fs')

	CDP((client) => {
	// Extract used DevTools domains.
	const {Page, Runtime} = client;

	/*****************************************************************
	* onMessage from the extension or tab (a content script)
	*****************************************************************/
	chrome.runtime.onMessage.addListener(
	function(request, sender, sendResponse) {
	if (request.cmd == "any command") {
	sendResponse({ result: "any response from background" });
	} else {
	sendResponse({ result: "error", message: `Invalid 'cmd'` });
	}

	module.exports = {
	config: {
	// default font size in pixels for all tabs
	fontSize: 12.5,

	// font family with optional fallbacks
	fontFamily: '"Meslo LG S for Powerline", Menlo, "DejaVu Sans Mono", "Lucida Console", monospace',

	// terminal cursor background color (hex)
	cursorColor: 'rgba(255,255,255,.4)',