Custom Range implementation in TypeScript with iterator

custom-range-with-iterator.ts

class MyRange implements Iterable<number> {
    public readonly [Symbol.iterator]: () => Iterator<number> = function* () { }

    constructor(private readonly start: number,private  readonly end: number,private readonly step: number = 1) {
        if (step === 0) return

        if (step < 0) step = -step

        if (start > end) this[Symbol.iterator] = function* () {
            for (let i = start; i >= end; i -= step) yield i
        }
        else this[Symbol.iterator] = function* () {
            for (let i = start; i <= end; i += step) yield i
        }
    }
}

for (const value of new MyRange(42,35,2)) console.log(value)