Executing a function using an interface parameter along with other types in a method

Is there a way to design an interface with this structure?

export interface GenericType<T> {
        (data: T): void;
        hasLimit?: boolean;
    }

The question now arises, how do I provide an object that adheres to this interface?

One solution could be altering the interface to:

export interface GenericType<T> {
        callback: (data: T) => void;
        hasLimit?: boolean;
    }

Then, provide an object matching the structure using:

methodname({callback, true})

But how can I pass an object with the boolean parameter without modifying the interface?

Answer №1

To achieve this functionality, you will need to declare a variable and then assign properties to it rather than creating it in a single statement:

const f = (data: string): void => { 
    console.log(data);
};
f.hasLimit = true;

Try it out in the playground: here

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