Upon analyzing the following code snippet:
export abstract class CustomError extends Error {
abstract statusCode: number;
constructor(message: string) {
super(message);
Object.setPrototypeOf(this, CustomError.prototype);
}
abstract serializeErrors(): { message: string; field?: string }[];
}
I am puzzled by what this refers to in this context. My assumption is that this should be equivalent to CustomError, making the expression seemingly redundant:
Object.setPrototypeOf(this, CustomError.prototype);
It appears like:
Object.setPrototypeOf(this, this.prototype);
This would essentially set the class's prototype to an object of the same class's prototype, leaving me perplexed. Shouldn't this inherently possess its own prototype?