/** Supported primitive values. */
type Primitive = boolean | number | string | null;
/**
 * Returns whether `value` is a primitive, acts as type guard for `<T = Attribute>` through generic.
 * @param value
 */
declare const isPrimitive: <T = Primitive>(value: unknown) => value is T;
/** Typeguard for boolean. */
declare const isBool: (value: unknown) => value is boolean;
/** Typeguard for number. */
declare const isNumber: (value: unknown) => value is number;
/** Typeguard for string. */
declare const isString: (value: unknown) => value is string;
/** Typeguard for null. */
declare const isNull: (value: unknown) => value is null;
/** Typeguard for undefined. */
declare const isUndefined: (value: unknown) => value is undefined;

export { isBool, isNull, isNumber, isPrimitive, isString, isUndefined };
export type { Primitive };