typescript-notes

types:
boolean, number, string, number[], [string, number], enum, any, void

cast:
<string>val or (val as string).length

declarations:
var, let, const

destructuring:
let [, second, , fourth, ...rest] = [1, 2, 3, 4, 5, 6, 7];
let {a, b} =  {a:3, b:2};

interfaces:
interface MyType {
    label: string;
    color?: string;
    [propName: string]: any;
    (source: string, subString: string): boolean;
    currentTime: Date;
    setTime(d: Date);
}

classes:

functions:
function add(x: number, y?: number, c = 3, ...rest): number {
    return x + y;
}

generics:
function identity<T>(arg: T): T {
    return arg;
}

union types:
function padLeft(value: string, padding: string | number) {
}
intersection types:
a & b
type aliases:
type Name = string;

modules:
namespaces:
decorators: