/**
 * @name u8aToString
 * @summary Creates a utf-8 string from a Uint8Array object.
 * @description
 * `UInt8Array` input values return the actual decoded utf-8 string. `null` or `undefined` values returns an empty string.
 * @example
 * <BR>
 *
 * ```javascript
 * import { u8aToString } from '@polkadot/util';
 *
 * u8aToString(new Uint8Array([0x68, 0x65, 0x6c, 0x6c, 0x6f])); // hello
 * ```
 */
export declare function u8aToString(value?: Uint8Array | null): string;