Custom errors

customError.ts

/**
 * Similar to a standard Error, but with a custom message and status code field.
 * @param status The status code of the error.
 * @param message The message of the error.
 */
export class HttpError extends Error {
  name = "HttpError";
  status: number;

  constructor(status: number, message: string) {
    super(message);
    this.status = status;
  }
}

customErrorWithConstructorMessage.ts

function constructErrorMessage(status:number,message:string):string {
  // Do something with the input
  return `${status} - ${message}`
}

/**
 * Similar to a standard Error, but with a custom message and status code field.
 * @param status The status code of the error.
 * @param message The message of the error.
 */
export class HttpError extends Error {
  name = "HttpError";
  status: number;

  constructor(status: number, message: string) {
    super(constructErrorMessage());
    this.status = status;
  }
}