export declare const gravityError: <E extends GravityErrorInput>(error: E & {
    status?: number;
}) => Error & {
    name: "GravityError";
    status: number;
} & E;
export declare function isGravityError(error: Error): error is GravityError;
export type GravityError = {
    name: "GravityError";
    status: number;
    stack?: string;
} & GravityErrorInput;
export type GravityErrorInput = {
    message: "Schema is not in sync with services";
} | {
    message: "Service inexistant";
    serviceName: string;
} | {
    message: "Service missing";
    serviceName: string;
} | {
    message: "Target missing";
    serviceName: string;
} | {
    message: "Target inexistant";
    serviceName: string;
    target: string;
} | {
    message: "Bad parameters";
    serviceName: string;
    target: string;
    errors: string[];
} | {
    message: "Guards cannot be asynchronous";
} | {
    message: "Return type should be a String, an ArrayBuffer or an UInt8Array";
    returnType: string;
} | {
    message: "Unexpected error";
};