import { ArrayWrapper } from './array';
import { MapWrapper } from './map';
import type { Pipe } from './lift';
export declare class ObjectWrapper<T extends object> {
    private _value;
    constructor(_value: T);
    private _isLiftWrapper;
    value(): T;
    private _clone;
    /**
     * Adds a new key/value to this object. This creates a new type.
     * To add a nullable key to an object while preserving its type, use "update()" instead.
     */
    add<K extends string, V>(key: K, value: V): ObjectWrapper<T & {
        [P in K]: V;
    }>;
    /**
     * Returns whether this object contains no keys.
     */
    isEmpty(): boolean;
    /**
     * Creates an Array of all this object's keys, in no particular order.
     * If the keys are a subtype of string, the Array will be typed with the proper key union type.
     */
    keys(): ArrayWrapper<Array<KeyAsString<keyof T>>>;
    /**
     * Maps one of this Object values, by key.
     * This is similar to remove('key').add('key', newValue) but is less error prone.
     * This can change the type of the object.
     */
    mapValue<K extends keyof T, V>(key: K, mapFunction: (value: T[K]) => V): ObjectWrapper<{
        [K2 in keyof T]: K2 extends K ? V : T[K2];
    }>;
    /**
     * Maps this Object's values.
     * This is mostly useful for objects with a single value type.
     */
    mapValues<V>(mapFunction: (value: T[keyof T]) => V): ObjectWrapper<Record<keyof T, V>>;
    pipe: typeof import("./lift").pipe;
    /**
     * Removes a key/value from this object and return a new object (and type)
     * To delete a (nullable) key from an object while preserving its type, use "update()" instead.
     */
    remove<K extends keyof T>(keyToRemove: K): ObjectWrapper<Omit<T, K>>;
    /**
     * Creates an Array with all these object's values.
     */
    values(): ArrayWrapper<Array<T[keyof T]>>;
    /**
     * Converts this Object to an Array of tuples.
     * Similar to Object.entries() but retains the type of keys.
     */
    toArray(): ArrayWrapper<[KeyAsString<keyof T>, T[keyof T]][]>;
    /**
     * Transforms this Object to a Map where the keys are the string typed keys of this Object.
     */
    toMap(): MapWrapper<KeyAsString<keyof T>, T[keyof T], Map<KeyAsString<keyof T>, T[keyof T]>>;
}
export declare function setObjectPipe(_pipe: Pipe): void;
declare type KeyAsString<K> = K extends string ? K : string;
export {};