export declare function isBoolean(value: unknown): value is boolean;
/** Whether the value is undefined. */
export declare const isUndefined: (value: unknown) => value is undefined;
/** Whether the value is null. */
export declare const isNull: (value: unknown) => value is null;
/** Whether the value is HTMLElement. */
export declare const isHtmlElement: (value: unknown) => value is HTMLElement;
/** Whether the value is Element. */
export declare const isElement: (value: unknown) => value is Element;
/** Whether the value is HTMLElement or null. */
export declare const isHtmlElementOrNull: (value: unknown) => value is HTMLElement | null;
/**
 * Will be removed in the next major release
 *
 * @deprecated Use `booleanAttribute` instead
 */
export declare function toBoolean(value: unknown): boolean;
export declare const getNodesWithoutComments: (nodes: NodeList) => Node[];
export declare const leftIconClassName = "kbq-icon_left";
export declare const rightIconClassName = "kbq-icon_right";
/** Whether the current platform is a Mac. */
export declare function isMac(): boolean;
/** Converts an enumeration (enum) type into a string literal type containing
 * all possible string representations of the values. */
export type KbqEnumValues<T extends string | number> = `${T}`;