@yandex/ui/esm/lib/createGlobalState.js

Yandex UI components

import { __read } from "tslib";
import { useState, useEffect } from 'react';
import { useIsomorphicLayoutEffect } from '../useIsomorphicLayoutEffect';
/**
 * Фабрика, для создания реакт-хука с глобальным состоянием.
 *
 * Используется, когда необходимо использовать общее состояние в нескольких компонентах.
 *
 * @example
 * const useSharedState = createGlobalState()
 *
 * function ComponentA() {
 *   const [value, setValue] = useSharedState()
 *   return <div>{value}</div>
 * }
 *
  * function ComponentB() {
 *   const [value, setValue] = useSharedState()
 *   return <div>{value}</div>
 * }
 */
export function createGlobalState(initialState) {
    var store = {
        state: initialState,
        setState: function (state) {
            store.state = state;
            store.setters.forEach(function (setter) { return setter(store.state); });
        },
        setters: [],
    };
    return function () {
        var _a = __read(useState(store.state), 2), globalState = _a[0], stateSetter = _a[1];
        // prettier-ignore
        useEffect(function () { return function () {
            store.setters = store.setters.filter(function (setter) { return setter !== stateSetter; });
        }; }, []);
        useIsomorphicLayoutEffect(function () {
            if (store.setters.indexOf(stateSetter) === -1) {
                store.setters.push(stateSetter);
            }
        });
        return [globalState, store.setState];
    };
}