TypeScript error when using the Spread operator?

Question

Whenever I use the spread operator such as below

public drawTextTest(p1: number, p2: number, p3: number):void {
    console.log(p1, p2, p3);
}
let array = [         


        

Answer 1

typed spread operator works only when all parameters are marked as optional

public drawTextTest(p1?: number, p2?: number, p3?: number):void {

see https://github.com/Microsoft/TypeScript/issues/4130#issuecomment-303486552