src/exception/errors.js

// Errors thrown by services/controllers; the error middleware turns them into JSON responses.
export class AppError extends Error {
    constructor(status, code, message) {
        super(message);
        this.status = status;
        this.code = code;
    }
}

export class BadRequestError extends AppError {
    constructor(message) { super(400, 'BAD_REQUEST', message); }
}

export class ForbiddenError extends AppError {
    constructor(message) { super(403, 'FORBIDDEN', message); }
}

export class NotFoundError extends AppError {
    constructor(message) { super(404, 'NOT_FOUND', message); }
}