芝麻web文件管理V1.00

编辑当前文件:/home/freeclou/app.optimyar.com/backend/node_modules/rc-util/lib/hooks/useMergedState.js

"use strict";

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

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

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function _getRequireWildcardCache() { return cache; }; return cache; }

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

function useControlledState(defaultStateValue, option) {
  var _ref = option || {},
      defaultValue = _ref.defaultValue,
      value = _ref.value,
      onChange = _ref.onChange,
      postState = _ref.postState;

var _React$useState = React.useState(function () {
    if (value !== undefined) {
      return value;
    }

if (defaultValue !== undefined) {
      return typeof defaultValue === 'function' ? defaultValue() : defaultValue;
    }

return typeof defaultStateValue === 'function' ? defaultStateValue() : defaultStateValue;
  }),
      _React$useState2 = _slicedToArray(_React$useState, 2),
      innerValue = _React$useState2[0],
      setInnerValue = _React$useState2[1];

var mergedValue = value !== undefined ? value : innerValue;

if (postState) {
    mergedValue = postState(mergedValue);
  }

function triggerChange(newValue) {
    setInnerValue(newValue);

if (mergedValue !== newValue && onChange) {
      onChange(newValue, mergedValue);
    }
  } // Effect of reset value to `undefined`

var firstRenderRef = React.useRef(true);
  React.useEffect(function () {
    if (firstRenderRef.current) {
      firstRenderRef.current = false;
      return;
    }

if (value === undefined) {
      setInnerValue(value);
    }
  }, [value]);
  return [mergedValue, triggerChange];
}