SkygearErrorNames variable

Signature:

SkygearErrorNames: {
    readonly BadRequest: "BadRequest";
    readonly Invalid: "Invalid";
    readonly Unauthorized: "Unauthorized";
    readonly Forbidden: "Forbidden";
    readonly NotFound: "NotFound";
    readonly AlreadyExists: "AlreadyExists";
    readonly TooManyRequest: "TooManyRequest";
    readonly InternalError: "InternalError";
    readonly ServiceUnavailable: "ServiceUnavailable";
}