Do not overlook any new error messages related to abstract classes

One of the challenges I'm facing is creating an instance of an abstract class within one of its functions. When using new this() in inherited classes, a new instance of the child class is created rather than the abstract class.

Typescript throws errors when trying to create a new instance with new this() because it technically attempts to instantiate the abstract class (if directly used).

Is there a way to ignore this error only for that specific line, without affecting all instances of abstract classes?

If I remove the abstract keyword from the class definition, Typescript stops raising issues and the code functions as expected. The problem here lies in satisfying Typescript's strict rules.

Answer №1

If you want to create a replica of an object in TypeScript, you can utilize the getPrototypeOf method.

abstract class BaseObject {
    clone(): this {
        return new (Object.getPrototypeOf(this).constructor)();
    }
}

class CustomObject extends BaseObject {}

let customInstance = (new CustomObject).clone();

console.log(customInstance); // CustomObject {}

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