Array.copyWithin() signature is incorrect

[unional]

Bug Report

The signature should be:

interface Array<T> {
  copyWithin(target: number, start?: number, end?: number): this
}

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/copyWithin

TS: 5.0.2

🙁 Actual behavior

Currently, it is:

interface Array<T> {
  copyWithin(target: number, start: number, end?: number): this
}

[jasonghent98]

Hi has this issue been resolved yet?

[ericbf]

@jasonghent98 it’s open, so that means no. But you can see on the sidebar there’s an open PR for it:

[tchetwin]

mdn/content#27296

MDN has since been updated to reflect the spec - the start parameter is not optional

[ericbf]

mdn/content#27296

MDN has since been updated to reflect the spec - the start parameter is not optional

Probably best to create a new issue, linking that change