Variables
Variable names start with a letter or underscore, followed by any combination of letters, underscores, or digits. Bool variable names may end with a ?. It must match this regular expression: [_a-zA-Z][_a-zA-Z0-9]*\??.
Some valid variable names include: _, foo345, isDone?
Variable names that end with a ? will be a bool, but the ? is not necessary.
// both of these are valid
const isDone = true; ✅
const isDone? = true; ✅
// this, however, is invalid
const num? = 5; ❌
Multiple Variables
// declare and assign immediately
const x, y = 0, 1;
// assign multiple return types
f getPoint -> number, number {}
const x, y = getPoint();
// declare then set later
let x, y: number, number;
x, y = getPoint();
// class (or any object) properties
this.x, this.y = getPoint();