export declare function strikethroughText(text: string): string;
export declare function escapeFormId(id: string): string;
export declare function unescapeFormId(id: string): string;
export declare function encodeBackSlashes(str: string): string;
/**
 * slugify() returns empty string when failed to slugify.
 * so try to return minimum slugified-string with failed one which keeps original value
 * the regex codes are referenced with https://gist.github.com/mathewbyrne/1280286
 */
export declare function safeSlugify(value: string): string;
export declare function safeJsonParse<T = unknown>(str: string, fallback?: any): T;
