/**
 * This function detects whether current browser is edge
 */
export declare const isEdge: () => boolean;
export declare const createRandomString: () => string;
type GetTextWidthOptions = {
    fontSize?: number;
    fontWeight?: number;
    defaultFont?: string;
    ctx: CanvasRenderingContext2D | null;
};
export declare const getTextWidth: (text: string, options: GetTextWidthOptions) => number;
export declare const getNumber: (value: number | undefined, fallback?: number) => number;
export {};