export declare const BIT_SIGNED = 128;
export declare const BIT_UNSIGNED = 0;
export declare const EMPTY_U8A: Uint8Array;
export declare const IMMORTAL_ERA: Uint8Array;
export declare const UNMASK_VERSION = 127;
export declare const DEFAULT_PREAMBLE = "bare";
export declare const LATEST_EXTRINSIC_VERSION = 5;
export declare const VERSION_MASK = 63;
export declare const TYPE_MASK = 192;
export declare const BARE_EXTRINSIC = 0;
export declare const SIGNED_EXTRINSIC = 128;
export declare const GENERAL_EXTRINSIC = 64;
export declare const LOWEST_SUPPORTED_EXTRINSIC_FORMAT_VERSION = 4;