export type Duration = number;
/** Arbitrary JSON value (google.protobuf.Value). */
export type JsonValue = string | number | boolean | null | JsonValue[] | {
    [key: string]: JsonValue;
};
/** Arbitrary JSON object (google.protobuf.Struct). */
export type JsonObject = {
    [key: string]: JsonValue;
};
export type RpcMethod<Req, Res> = ((request: Req) => Promise<Res>) & {
    safe(request: Req): Promise<[{
        error: unknown;
    }, null] | [null, Res]>;
};
export type RpcMethodV3<Req, Res, Err> = ((request: Req) => Promise<Res>) & {
    safe(request: Req): Promise<[Err, null] | [null, Res]>;
    parseError(e: unknown): Err;
};