customcommander

Observing state transitions with XState & RxJS

Objective

Create an observable that emits each time a specific transition is taken.

Problem

This "flip" machine keeps tossing the coin each time it lands on head. The machine reaches its final state when the side is tail:

customcommander

Testdouble.js Cheatsheet & Cookbook

Why use testdouble.js?

Suppose we need to test that a function calls another function:

function call(fn) {
  fn();
}

customcommander

RIS Specification

This is to the best of my knowledge the RIS specification as it was defined in 2011 by the original author. See https://en.wikipedia.org/wiki/RIS_(file_format)#cite_note-:1-5.

(Re)producing the dataset

Requirements

In order to run the scripts used to produce the dataset the following programs must be available on your system path:

customcommander

JSDoc Cheat Sheet

Things I found myself researching over and over without taking the time to write them down. Until now.

Table of Contents

1. Should I use {String} vs {string} or {Number} vs {number} ...?
2. Type Expression: Optional vs Nullable vs Non-nullable
3. When do I need to use the @function tag?