export declare function getHashValue(key: string): string | null;
export declare function getQueryStringParam(param: string): string | null;
export declare function animFrame(fn: (time?: number) => void): number;
export declare function removeFromArray<T>(item: T, array: T[]): void;
export declare function getUniqueId(): string;
/**
 * A basic XSS filter. It is ultimately up to the
 * implementing developer to make sure their particular
 * applications and usecases are save from cross site scripting attacks
 *
 * @param input
 * @param keepTags
 *
 * @returns filtered input
 */
export declare function filterXss(input: string, keepTags: boolean): string;
/**
 * Removes html tags from a string
 *
 * @param input
 *
 * @returns input without tags
 */
export declare function stripTags(input: string): string;
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