export declare type Message = string | Error;
export declare type PROLOAD_ERROR_CODE = 'ERR_PROLOAD_INVALID' | 'ERR_PROLOAD_NOT_FOUND';
export declare class ProloadError extends Error {
    code?: string;
    constructor(opts?: {
        message?: string;
        code?: string;
    });
}
export declare function assert(bool?: boolean, message?: Message, code?: PROLOAD_ERROR_CODE): void;