Where/how to add d.ts for private, scoped npm modules?

Question

I am attempting to port a Javascript project to Typescript. I have a dependency named like: @myscope/utils

A file from this is imported into the ts file

Answer 1

I managed to solve this myself. I referred to the information on writing declaration files

The key to get the module to be resolved is to declare a module with a name of the full path of the package. I created a index.d.ts file for the module, that I added to my files section of tsconfig.json.

The file contained the following declaration:

declare namespace date {
  function now(): number;
}

declare module "@myscope/utils/date" {
   export = date; 
}

Though not necessary, I structured my imports like typings does. I may simplify later after I've ported the rest of the application.

I created the following files:

mytypings/index.d.ts
mytypings/modules/@myscope/utils/index.d.ts

Note there is no date part of the utils path.

mytypings/index.d.ts contains a reference path to mytypings/modules/@myscope/utils/index.d.ts and then was added to section of tsconfig.json.

My plan is to add other libraries in the same way.