"use strict";

var _typeof = require("@babel/runtime-corejs3/helpers/typeof");

var _WeakMap = require("@babel/runtime-corejs3/core-js-stable/weak-map");

var _Object$getOwnPropertyDescriptor = require("@babel/runtime-corejs3/core-js-stable/object/get-own-property-descriptor");

var _interopRequireDefault = require("@babel/runtime-corejs3/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = useFrameState;

var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime-corejs3/helpers/slicedToArray"));

var React = _interopRequireWildcard(require("react"));

var _raf = _interopRequireDefault(require("raf"));

function _getRequireWildcardCache(nodeInterop) { if (typeof _WeakMap !== "function") return null; var cacheBabelInterop = new _WeakMap(); var cacheNodeInterop = new _WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }

function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || _typeof(obj) !== "object" && typeof obj !== "function") { return { "default": obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && _Object$getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? _Object$getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj["default"] = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function useFrameState(defaultValue) {
  var _React$useState = React.useState(defaultValue),
      _React$useState2 = (0, _slicedToArray2["default"])(_React$useState, 2),
      value = _React$useState2[0],
      setValue = _React$useState2[1];

  var frameRef = (0, React.useRef)(null);
  var batchRef = (0, React.useRef)([]);
  var destroyRef = (0, React.useRef)(false);
  React.useEffect(function () {
    return function () {
      destroyRef.current = true;

      _raf["default"].cancel(frameRef.current);
    };
  }, []);

  function setFrameValue(updater) {
    if (destroyRef.current) {
      return;
    }

    if (frameRef.current === null) {
      batchRef.current = [];
      frameRef.current = (0, _raf["default"])(function () {
        frameRef.current = null;
        setValue(function (prevValue) {
          var current = prevValue;
          batchRef.current.forEach(function (func) {
            current = func(current);
          });
          return current;
        });
      });
    }

    batchRef.current.push(updater);
  }

  return [value, setFrameValue];
}