Impossible to catch and format errors

[DanielHreben]

Library throws errors of generic TypeError without any additional information attached to them. It makes it almost impossible to distinguish them from TypeErrors thrown by any other piece of code. The only option is to try to parse error messages, which is not convenient and unreliable, cuz they seem like not something that is part of the library API contract. Could you please add custom error class like this?

export class JSONTypeError extends TypeError { // Custom class makes it possible to differentiate errors thrown by this library
  constructor(message) {
    super(message)
    this.code = 'FAILED_TO_PARSE_JSON' // Optionally, may make sense to attach some sort of error code in order to  differentiate it without using `instanceof` operator
  }
}

[taion]

How are you hitting these in the first place, though? Doesn't the GraphQL executor wrap up all the error handling here?