Array().fill() does not work with number

[thomasthiebaud]

TypeScript Version: 2.3.4

Code

This code

Array<number>(4).fill(0).map(...)

gave me the following error

Error:(22, 49) TS2339:Property 'fill' does not exist on type 'number[]'.

But if I switch to

Array<string>(4).fill('0').map(...)

Everything works well. Why is not working with number ? Is it a desire behavior ?

[thomasthiebaud]

Using

let arr:Array<Number>=new Array(8);
arr.fill(0);

solved my issue