Intellisense on global prototype overrides

[olmobrutall]

Hi TS Team,

Both in VS Code and Visual Studio 2017, since the latest version of Typescript (2.7.2) we're not getting IntelliSense for methods that override prototypes of standard classes (Array, string, Promise).

Here is an example of the d.ts file that we use to override this classes: https://github.com/signumsoftware/framework/blob/master/Signum.React/Scripts/Globals.d.ts

The methods are not shown anymore in the auto-completion list after '.' or Ctrl+Space:

But the code compiles just OK and, once blindly written, parameter information works:

Adding an explicit /// <reference path="..."/> doesn't seem to have any effect.

Thanks in advance and keep the good work 👍

Could you test with typescript@next?

[olmobrutall]

Hi @Andy-MS, I don't know how to install typescript@next language service in VS 2017, but I've tried with 2.8 RC and the same problem happen for promise:

It's strange, but for Array works.

Also works for String:

[mhegazy]

looks fixed in latest

[olmobrutall]

Hi again,

I think this problem is back in Typescript 2.9. At least in VS2017 (Version 15.7.3)

• Extensions on string work ok.
• Extensions on Promise do not appear in auto-completion.
• Extensions on Array appear only on literals ([]) but not in general expressions.

Regards.

@olmobrutall Could you provide an example that shows how you're extending the prototypes? The following works for me:

interface Array<T> {
    sliceInHalf(): [T[], T[]];
}
function f(): number[] { return []; }
f().sliceInHalf();