Extending an interface in Typescript using a generic interface

Suppose I have the following interface:

interface IAddress {
    addressProperty: any;
}

Is it possible to create an interface that resembles this one:

interface ILoadable<T> {
    loading: boolean;
}

This way, I would be able to use it like so:

interface IStateSlice {
    address: ILoadable<IAddress>;
}

In this example, "address" would be a combination of ILoadable and IAddress properties.

Answer №1

It is possible to utilize intersection types in this scenario:

interface ILocation {
    locationInfo: any;
}

interface IEditable {
    editable: boolean;
}

interface IStateSection {
    location: IEditable & ILocation
}

These can then be implemented as follows:

class StateSection implements IStateSection{
    location = {
        editable: true,
        locationInfo: 'example'
    }
}

An alternative approach would be creating a distinct type for this purpose:

type EditableLocation = IEditable & ILocation

interface IStateSection {
    location: EditableLocation
}

Similarly, you could achieve the same outcome by extending interfaces:

interface EditableLocation extends IEditable, ILocation { }

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