How do you include custom types?

[a9udn9u]

If your exposed API returns a custom type defined by yourself, say in "typings/types.d.ts", and you specify this file in tsconfig.json, typescript compiler will not automatically include this custom type in the generated index.d.ts, how do you export the custom type?

[minicatsCB]

I was about to ask a similar question. Please, correct me if I am wrong: with the current tsconfig.json, tsc automatically infers the typings and put them in dist/index.d.ts. But how if I want to add my custom typings like @a9udn9u said?

For example, I want to make available to any customer of my library a Dog type. Then, in typings/index.d.ts (outside src dir) I put:

declare module "hwrld" {
    export interface Dog {
        name: string;
        breed: string;
        age: number;
    }
}

But when I build with tsc the custom type doesn't get compiled in the dist/ directory. I suppose that's why testing the example-consumer throws the below error: Module '"hwrld"' has no exported member 'Dog'.