use-merge-value/dist/index.js

Easier to write a controlled component

'use strict';

var React = require('react');

function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

var React__default = /*#__PURE__*/_interopDefaultLegacy(React);

function _iterableToArrayLimit(arr, i) {
  var _i = null == arr ? null : "undefined" != typeof Symbol && arr[Symbol.iterator] || arr["@@iterator"];
  if (null != _i) {
    var _s,
      _e,
      _x,
      _r,
      _arr = [],
      _n = !0,
      _d = !1;
    try {
      if (_x = (_i = _i.call(arr)).next, 0 === i) {
        if (Object(_i) !== _i) return;
        _n = !1;
      } else for (; !(_n = (_s = _x.call(_i)).done) && (_arr.push(_s.value), _arr.length !== i); _n = !0);
    } catch (err) {
      _d = !0, _e = err;
    } finally {
      try {
        if (!_n && null != _i.return && (_r = _i.return(), Object(_r) !== _r)) return;
      } finally {
        if (_d) throw _e;
      }
    }
    return _arr;
  }
}
function _slicedToArray(arr, i) {
  return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest();
}
function _arrayWithHoles(arr) {
  if (Array.isArray(arr)) return arr;
}
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 _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 useControlledState(defaultStateValue, option) {
  var _ref = option || {},
    defaultValue = _ref.defaultValue,
    value = _ref.value,
    onChange = _ref.onChange,
    postState = _ref.postState;
  var _React$useState = React__default['default'].useState(function () {
      if (value !== undefined) {
        return value;
      }
      if (defaultValue !== undefined) {
        return typeof defaultValue === 'function' ? defaultValue() : defaultValue;
      }
      return typeof defaultStateValue === 'function' ? defaultStateValue() : defaultStateValue;
    }),
    _React$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);
    }
  }
  return [mergedValue, triggerChange];
}

module.exports = useControlledState;