import { ShutterSpeed } from './configs';
import { ConfigDesc } from './Tethr';
export declare function toHexString(data: number | ArrayBuffer, bytes?: number | 'auto'): string;
export declare function isntNil<T>(value: T): value is NonNullable<T>;
export declare function sliceJpegData(buffer: ArrayBuffer): ArrayBuffer;
export declare function computeShutterSpeedSeconds(ss: ShutterSpeed): number;
export declare const UnsupportedConfigDesc: ConfigDesc<any>;
export declare const UnsupportedOperationResult: {
    readonly status: "unsupported";
};
export declare function readonlyConfigDesc<T>(value: T): ConfigDesc<T>;