jed

// per https://twitter.com/yoshuawuyts/status/1494119486429007879
// "In JavaScript, is there a function which takes N Promises, and returns an asyncIterator which yields N resolved values?"

let promises = Array.from({length: 10}, (n, i) => {
  return new Promise(cb => setTimeout(cb, Math.random() * 1e3, i))
})

let iterator = iteratePromises(promises)
for await (let value of iterator) console.log(value)

evdama

// @ts-nocheck TODO: remove at some point

import babel from 'rollup-plugin-babel';
import commonjs from 'rollup-plugin-commonjs';
import config from 'sapper/config/rollup.js';
import getPreprocessor from 'svelte-preprocess'
import path from 'path'
import pkg from './package.json';
import postcss from 'rollup-plugin-postcss'
import replace from 'rollup-plugin-replace';

Coding-Enthusiast

AND (&)

100  
101  
---  
100  

OR (|)

100  
101  
---  

101

bradtraversy

VSCode Shortcuts

List of helpful shortcuts for faster coding

If you have any other helpful shortcuts, feel free to add in the comments of this gist :)

Official List of all commands

• Windows
• Mac

fnky

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

• Ctrl-Key: ^[
• Octal: \033
• Unicode: \u001b
• Hexadecimal: \x1B
• Decimal: 27

Klerith

// Web-Push
// Public base64 to Uint
function urlBase64ToUint8Array(base64String) {
    var padding = '='.repeat((4 - base64String.length % 4) % 4);
    var base64 = (base64String + padding)
        .replace(/\-/g, '+')
        .replace(/_/g, '/');

    var rawData = window.atob(base64);
    var outputArray = new Uint8Array(rawData.length);

cecilemuller

How to create an HTTPS certificate for localhost domains

This focuses on generating the certificates for loading local virtual hosts hosted on your computer, for development only.

Do not use self-signed certificates in production ! For online certificates, use Let's Encrypt instead (tutorial).

sebmarkbage

The Rules of React

All libraries have subtle rules that you have to follow for them to work well. Often these are implied and undocumented rules that you have to learn as you go. This is an attempt to document the rules of React renders. Ideally a type system could enforce it.

What Functions Are "Pure"?

A number of methods in React are assumed to be "pure".

On classes that's the constructor, getDerivedStateFromProps, shouldComponentUpdate and render.

cecilemuller

{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Example",
      "type": "node",
      "request": "launch",
      "runtimeExecutable": "node",
      "runtimeArgs": ["--nolazy", "-r", "ts-node/register/transpile-only"],

samueljseay

// default exports
export default 42;
export default {};
export default [];
export default (1 + 2);
export default foo;
export default function () {}
export default class {}
export default function foo () {}