/**
 * Copyright (c) 2017-2020 mol* contributors, licensed under MIT, See LICENSE file for more info.
 *
 * Adapted from https://github.com/rcsb/mmtf-javascript
 * @author Alexander Rose <alexander.rose@weirdbyte.de>
 * @author David Sehnal <david.sehnal@gmail.com>
 */
import { StringLike } from './string-like.js';
export declare function utf8Write(data: Uint8Array, offset: number, str: string): void;
/** Decode UTF8 data. Return as primitive `string` type, or fail if the result is longer than MAX_STRING_LENGTH. */
export declare function utf8Read(data: Uint8Array, offset?: number, length?: number): string;
/** Decode UTF8 data, potentially exceeding MAX_STRING_LENGTH. Return as primitive `string` if possible; or as `ChunkedBigString` if the result is longer than MAX_STRING_LENGTH. */
export declare function utf8ReadLong(data: Uint8Array, offset?: number, length?: number): StringLike;
export declare function utf8ByteCount(str: string): number;