export declare type Extractor = (event: any) => object;
export declare type Size = {
    readonly width: number;
    readonly height: number;
};
export declare type Position = {
    readonly x: number;
    readonly y: number;
};
export declare type DeviceOrientation = {
    readonly absolute: boolean;
    readonly alpha: number | null;
    readonly beta: number | null;
    readonly gamma: number | null;
};
export declare const extractWindowSize: Extractor;
export declare const extractWindowScroll: Extractor;
export declare const extractMousePosition: Extractor;
export declare const extractDeviceOrientation: Extractor;
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