/**
 * Compose the passed in functions.
 */
export declare function compose<T1, T2, T3>(f: (x: T2) => T3, g: (x: T1) => T2): (x: T1) => T3;
export declare function compose<T1, T2, T3, T4>(f: (x: T3) => T4, g: (x: T2) => T3, h: (x: T1) => T2): (x: T1) => T4;
export declare function compose<T1, T2, T3, T4, T5>(f: (x: T4) => T5, g: (x: T3) => T4, h: (x: T2) => T3, k: (x: T1) => T2): (x: T1) => T5;
/**
 * Create a pipe of the passed in functions.
 */
export declare function pipe<T1, T2, T3>(f: (x: T1) => T2, g: (x: T2) => T3): (x: T1) => T3;
export declare function pipe<T1, T2, T3, T4>(f: (x: T1) => T2, g: (x: T2) => T3, h: (x: T3) => T4): (x: T1) => T4;
export declare function pipe<T1, T2, T3, T4, T5>(f: (x: T1) => T2, g: (x: T2) => T3, h: (x: T3) => T4, k: (x: T4) => T5): (x: T1) => T5;
/**
 * Create a function that plucks a property out of an object.
 */
export declare const pluck: <T, K extends keyof T>(key: K) => (obj: T) => T[K];
/**
 * Create a function that checks whether a plucked value is equal to the given value.
 */
export declare const is: <T, K extends keyof T>(key: K, value: T[K]) => (obj: T) => boolean;
/**
 * Create a function that checks whether a plucked value is not equal to the given value.
 */
export declare const isNot: <T, K extends keyof T>(key: K, value: T[K]) => (obj: T) => boolean;
/**
 * Same as `Boolean` but acts as a type guard/"null check".
 *
 * @todo get rid of this once Typescript supports it
 * @see https://github.com/Microsoft/TypeScript/pull/29955
 */
export declare const Bool: <T>(value: T) => value is Exclude<T, false | null | undefined | "" | 0>;
/**
 * Do nothing.
 */
export declare const noop: () => void;
export declare const isEnabled: <T extends {
    enabled?: boolean;
}>({ enabled }: T) => boolean;
export declare const isDisabled: <T extends {
    enabled?: boolean;
}>({ enabled }: T) => boolean;
export declare const isSelected: <T extends {
    selected?: boolean;
}>({ selected }: T) => boolean;
export declare const isDeselected: <T extends {
    selected?: boolean;
}>({ selected }: T) => boolean;
export declare const isChecked: <T extends {
    checked?: boolean;
}>({ checked }: T) => boolean;
export declare const isUnchecked: <T extends {
    checked?: boolean;
}>({ checked }: T) => boolean;
export declare const isVisible: <T extends {
    visible?: boolean;
}>({ visible }: T) => boolean;
export declare const isInvisible: <T extends {
    visible?: boolean;
}>({ visible }: T) => boolean;
/**
 * Return the value if it's set, or the default value otherwise.
 */
export declare const getValueOrDefault: <T>(value: T | undefined, defaultValue: T) => T;