import { type ModifyValue } from "./types.js";
export type UpdateSetter<O, K extends keyof O, V> = V | ((prev: O[K]) => V);
export type Update = {
    <O extends object, K0 extends keyof O, K1 extends keyof O[K0], K2 extends keyof O[K0][K1], K3 extends keyof O[K0][K1][K2], K4 extends keyof O[K0][K1][K2][K3], V>(object: O, k0: K0, k1: K1, k2: K2, k3: K3, k4: K4, setter: UpdateSetter<O[K0][K1][K2][K3], K4, V>): ModifyValue<O, K0, ModifyValue<O[K0], K1, ModifyValue<O[K0][K1], K2, ModifyValue<O[K0][K1][K2], K3, ModifyValue<O[K0][K1][K2][K3], K4, V>>>>>;
    <O extends object, K0 extends keyof O, K1 extends keyof O[K0], K2 extends keyof O[K0][K1], K3 extends keyof O[K0][K1][K2], V>(object: O, k0: K0, k1: K1, k2: K2, k3: K3, setter: UpdateSetter<O[K0][K1][K2], K3, V>): ModifyValue<O, K0, ModifyValue<O[K0], K1, ModifyValue<O[K0][K1], K2, ModifyValue<O[K0][K1][K2], K3, V>>>>;
    <O extends object, K0 extends keyof O, K1 extends keyof O[K0], K2 extends keyof O[K0][K1], V>(object: O, k0: K0, k1: K1, k2: K2, setter: UpdateSetter<O[K0][K1], K2, V>): ModifyValue<O, K0, ModifyValue<O[K0], K1, ModifyValue<O[K0][K1], K2, V>>>;
    <O extends object, K0 extends keyof O, K1 extends keyof O[K0], V>(object: O, k0: K0, k1: K1, setter: UpdateSetter<O[K0], K1, V>): ModifyValue<O, K0, ModifyValue<O[K0], K1, V>>;
    <O extends object, K extends keyof O, V>(object: O, key: K, setter: UpdateSetter<O, K, V>): ModifyValue<O, K, V>;
};
/**
 * Change single value in an object by key. Allows accessign nested objects by passing multiple keys.
 *
 * Performs a shallow copy of each accessed object.
 *
 * @param object original source
 * @param ...keys keys of sequential accessed objects
 * @param value a value to set in place of a previous one, or a setter function.
 * ```ts
 * V | ((prev: O[K]) => V)
 * ```
 * a new value doesn't have to have the same type as the original
 * @returns changed copy of the original object
 *
 * @example
 * const original = { foo: { bar: { baz: 123 }}};
 * const newObj = update(original, "foo", "bar", "baz", prev => prev + 1)
 * original // { foo: { bar: { baz: 123 }}}
 * newObj // { foo: { bar: { baz: 124 }}}
 */
export declare const update: Update;