import type BN from 'bn.js';
import type { Hash } from '../interfaces/runtime';
import type { Registry } from './registry';
export declare type AnyJson = string | number | boolean | null | undefined | AnyJson[] | {
    [index: string]: AnyJson;
};
export declare type AnyFunction = (...args: any[]) => any;
export declare type AnyNumber = BN | BigInt | Uint8Array | number | string;
export declare type AnyString = string | string;
export declare type AnyTuple = Codec[];
export declare type AnyU8a = Uint8Array | number[] | string;
export declare type ArrayElementType<T extends ReadonlyArray<unknown>> = T extends ReadonlyArray<infer ElementType> ? ElementType : never;
export declare type BareOpts = boolean | Record<string, boolean>;
export declare type Callback<T, E = undefined> = E extends Codec ? (result: T, extra: E) => void | Promise<void> : (result: T) => void | Promise<void>;
export declare type CodecTo = 'toHex' | 'toJSON' | 'toString' | 'toU8a';
/**
 * @name Codec
 * @description
 * The base Codec interface. All types implement the interface provided here. Additionally
 * implementors can add their own specific interfaces and helpers with getters and functions.
 * The Codec Base is however required for operating as an encoding/decoding layer
 */
export interface Codec {
    /**
     * @description The length of the value when encoded as a Uint8Array
     */
    readonly encodedLength: number;
    /**
     * @description Returns a hash of the value
     */
    readonly hash: Hash;
    /**
     * @description Checks if the value is an empty value
     */
    readonly isEmpty: boolean;
    /**
     * @description The registry associated with this object
     */
    readonly registry: Registry;
    /**
     * @description The block at which this value was retrieved/created (set to non-empty when retrieved from storage)
     */
    createdAtHash?: Hash;
    /**
     * @description Compares the value of the input to see if there is a match
     */
    eq(other?: unknown): boolean;
    /**
     * @description Returns a hex string representation of the value. isLe returns a LE (number-only) representation
     */
    toHex(isLe?: boolean): string;
    /**
     * @description Converts the Object to to a human-friendly JSON, with additional fields, expansion and formatting of information
     */
    toHuman(isExtended?: boolean): AnyJson;
    /**
     * @description Converts the Object to JSON, typically used for RPC transfers
     */
    toJSON(): AnyJson;
    /**
     * @description Returns the base runtime type name for this instance
     */
    toRawType(): string;
    /**
     * @description Returns the string representation of the value
     */
    toString(): string;
    /**
     * @description Encodes the value as a Uint8Array as per the SCALE specifications
     * @param isBare true when the value has none of the type-specific prefixes (internal)
     */
    toU8a(isBare?: BareOpts): Uint8Array;
}
export declare type CodecArg = Codec | BigInt | BN | boolean | string | Uint8Array | boolean | number | string | undefined | CodecArgArray | {
    [index: string]: CodecArg;
};
interface CodecArgArray extends Array<CodecArg> {
}
export interface Constructor<T = Codec> {
    new (registry: Registry, ...value: any[]): T;
}
export declare type ConstructorDef<T = Codec> = Record<string, Constructor<T>>;
export declare type ArgsDef = Record<string, Constructor>;
export {};