/TypeScript/Typescript extend imported namespace

Typescript extend imported namespace

// We can import a namespace in a non-declaration .ts, and export it again as a extended type:

// custom-fc.ts : enhances declaration of FC namespace
import * as origFC from "fullcalendar";

declare namespace Complimentary {
    class TimeGrid {
        prepareHits(): void;
    }
    let views: any;
}

// apply additional types to origFc and export again
export const FC: (typeof Complimentary & typeof origFC) = origFC as any;

Source: stackoverflow.com

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