How to export third party type definitions?

[michalHT]

I have a types.ts file that looks like that:

import type { Column } from "react-table"

export type Columns<DataItem extends Record<string, unknown>> = Array<Column<DataItem> & { sticky?: "left" | "right"  }>

In the dist folder it's converted to types.d.ts with following contents:

import type { Column } from "react-table";

export declare type Columns<DataItem extends Record<string, unknown>> = Array<Column<DataItem> & {
    sticky?: "left" | "right";
}>;

The problem is that when my library is installed via npm in a project that does not have @types/react-table as a dependency, that project has no access to Column type definition and therefore my custom Columns type definition is incomplete.

How would I go about forwarding the type from external library without adding it as a peerDependency?

I have @types/react-table installed as a devDependency in the TSDX project (although I tried with just a dependency as well).