@vnmfify/core/utils/state.js

```shell npm i @vnmfify/core -S ```

import _isEqual from "lodash/isEqual";

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) { symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); } keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

import { useForceUpdate } from "@vnmfify/hooks";
import { createRef, useCallback, useEffect, useMemo, useRef } from "react";
export { useToRef } from "@vnmfify/hooks";
export function usePreviousRef(value) {
  var previousRef = useRef(value);
  useEffect(() => {
    previousRef.current = value;
  });
  return previousRef;
}
export function usePrevious(state) {
  return usePreviousRef(state).current;
}
export function useRendered(cb) {
  return cb === null || cb === void 0 ? void 0 : cb();
}
export function useRenderedRef(cb) {
  var stateRef = useRef();

  if (cb) {
    stateRef.current = cb();
  }

  return stateRef;
}
export function useRefs() {
  var refs = useRef([]);
  var setRefs = useCallback(index => el => {
    if (!refs.current[index]) {
      refs.current[index] = /*#__PURE__*/createRef();
    }

    refs.current[index].current = el;
  }, []);
  var getRef = useCallback(index => refs.current[index], []);
  var getRefs = useCallback(() => refs.current, []);
  var clearRefs = useCallback(() => refs.current = [], []);
  return useMemo(() => ({
    refs,
    getRef,
    getRefs,
    setRefs,
    clearRefs
  }), [clearRefs, getRef, getRefs, setRefs]);
}
export function useObject(state) {
  var forceUpdate = useForceUpdate();
  var stateRef = useRef(state);
  var currentRef = useRef();
  var previousRef = useRef();

  if (!_isEqual(currentRef.current, state)) {
    previousRef.current = currentRef.current;
    currentRef.current = state;
    stateRef.current = state;
  }

  var setObject = useCallback(newState => {
    stateRef.current = _objectSpread(_objectSpread({}, stateRef.current), newState);
    forceUpdate();
  }, []);
  var getObject = useCallback(() => stateRef.current, []);
  return useMemo(() => ({
    object: stateRef.current,
    getObject,
    setObject
  }), [stateRef.current, getObject, setObject]);
}
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