扩展也是函数的.d.ts模块

Question

I'm attempting to extend (from definitely typed) locally: gm/gm.d.ts The module is a function as well as a namespace, and I need to add an additional invocation of the function. I want to extend the current typing

function m(image: string): m.State;

to also support

function m(readableStream:NodeJS.ReadableStream, image: string): m.State;

I'm currently running into the issue that any attempt to add the additional typing for the new function, ends up overwriting the entire module.

Ultimately I will just submit a PR for the typing, but in general I would like the ability to augment the existing typings without a need for modifying the original file.

Answer 1

Just define a function overload:

function m(image: string): m.State;
function m(readableStream:NodeJS.ReadableStream, image: string): m.State;