export type GlkTypedArray = Uint8Array | Uint32Array;
export type GlkTypedArrayConstructor = Uint8ArrayConstructor | Uint32ArrayConstructor;
/** A DataView with support for getting and setting arrays and four character codes */
export declare class FileView extends DataView {
    constructor(array: Uint8Array);
    constructor(buffer: ArrayBuffer, byteOffset?: number, byteLength?: number);
    getFourCC(index: number): string;
    getUint8Subarray(index?: number, length?: number): Uint8Array;
    setFourCC(index: number, text: string): void;
    setUint8Array(index: number, data: Uint8Array): void;
}
/** Write a Uint32Array as a big-endian Uint8Array */
export declare function Array_to_BEBuffer(arr: Uint32Array): Uint8Array;
/** Read a big-endian Uint8Array into a Uint32Array */
export declare function BEBuffer_to_Array(buf: Uint8Array): Uint32Array;
/** If we can determine that the browser is currently pinch zoomed */
export declare function is_pinch_zoomed(): boolean;
export declare function is_unicode_array(arr: GlkTypedArray): boolean;
export declare const utf8decoder: TextDecoder;
export declare const utf8encoder: TextEncoder;