import { Unary } from '../../function/function/unary';
import { Enum, Member } from '../../object/enum/enum';
/**
 * An enum object with a list of available bitmask flags.
 *
 * @since v0.6.0
 */
export type Flags<T extends number = number> = Enum<T>;
/**
 * A bitmask flag defined in a given {@link Flags} enum.
 *
 * @since v0.6.0
 */
export type Flag<T extends Flags> = T[keyof T] & number;
/**
 * A bitmask consisting of one or more {@link Flags}.
 *
 * @see https://en.wikipedia.org/wiki/Mask_(computing)
 *
 * @since v0.6.0
 */
export type Bitmask<T extends Flags | number = number> = T extends Flags ? Flag<T> : number;
/**
 * Creates a bitmask with all given flags raised.
 *
 * @since v0.6.0
 */
export declare function bitmask<T extends Flags | number = number>(flags: Bitmask<T>[]): Bitmask;
/**
 * Returns flags that are raised on the given bitmask.
 *
 * @since v0.6.0
 */
export declare function raisedFlags<T extends number>(type: object, bitmask: Bitmask<T>): Member<T>[];
/**
 * Creates a function that returns `true` if a given `flag` is raised in the input bitmask.
 *
 * @see isFlagOn()
 *
 * @since v0.6.0
 */
export declare function hasFlagOn<T extends Flags | number>(flag: Bitmask<T>): Unary<Bitmask<T>, boolean>;
/**
 * Returns `true` if a given flag is raised on a bitmask.
 *
 * @since v0.6.0
 */
export declare function isFlagOn<T extends Flags | number>(bitmask: Bitmask<T>, flag: Bitmask<T>): boolean;