export declare const UNCHECKED_AND_UNCLONED: unique symbol;
export default class ByteArray {
    contents: Uint8Array<ArrayBuffer>;
    protected constructor(contents: Uint8Array<ArrayBuffer>, checkValid: ((contents: Uint8Array<ArrayBuffer>) => void) | typeof UNCHECKED_AND_UNCLONED);
    protected static checkLength(expectedLength: number): (contents: Uint8Array<ArrayBuffer>) => void;
    getContents(): Uint8Array<ArrayBuffer>;
    serialize(): Uint8Array<ArrayBuffer>;
}