export interface DragRect {
    left: number;
    top: number;
    width: number;
    height: number;
}
export interface ZoomRect extends DragRect {
    zoom?: number;
}
export interface CropRange {
    sx: number;
    sy: number;
    sw: number;
    sh: number;
}
export declare function getRange(select: DragRect, target: ZoomRect): CropRange;
export declare function createCutImg(): (url: string, range: CropRange, format?: string) => Promise<Blob>;
export declare function getVectorLength(vector: number[]): number;
export declare function getProjectionLength(vector: number[], targetVector: number[]): number;
export declare function getBase64(blob: Blob): Promise<string>;
export declare function isMobile(): boolean;
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