react-memoize/dist/Memoizer.js

Memoized mapStateToProps on component level

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.MemoizeState = exports.MemoizeOne = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _react = require('react');

var _propTypes = require('prop-types');

var _propTypes2 = _interopRequireDefault(_propTypes);

var _reactLifecyclesCompat = require('react-lifecycles-compat');

var _memoizeState = require('memoize-state');

var _memoizeState2 = _interopRequireDefault(_memoizeState);

var _memoizeOne = require('memoize-one');

var _memoizeOne2 = _interopRequireDefault(_memoizeOne);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var createMemoizer = function createMemoizer(memoizationFunction) {
  var Memoize = function (_Component) {
    _inherits(Memoize, _Component);

    function Memoize() {
      var _ref;

      var _temp, _this, _ret;

      _classCallCheck(this, Memoize);

      for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }

      return _ret = (_temp = (_this = _possibleConstructorReturn(this, (_ref = Memoize.__proto__ || Object.getPrototypeOf(Memoize)).call.apply(_ref, [this].concat(args))), _this), _this.state = {
        // eslint-disable-next-line react/no-unused-state
        calculateResult: memoizationFunction(_this.props.compute)
      }, _temp), _possibleConstructorReturn(_this, _ret);
    }

    _createClass(Memoize, [{
      key: 'shouldComponentUpdate',
      value: function shouldComponentUpdate(nextProps, nextState) {
        return !nextProps.pure || nextState.result !== this.state.result;
      }
    }, {
      key: 'render',
      value: function render() {
        return this.props.children(this.state.result);
      }
    }], [{
      key: 'getDerivedStateFromProps',
      value: function getDerivedStateFromProps(props, state) {
        var children = props.children,
            compute = props.compute,
            pure = props.pure,
            rest = _objectWithoutProperties(props, ['children', 'compute', 'pure']);

        var result = state.calculateResult(rest);
        if (result !== state.result) {
          return {
            result: result
          };
        }
        return null;
      }
    }]);

    return Memoize;
  }(_react.Component);

  Memoize.propTypes = {
    children: _propTypes2.default.func.isRequired,
    compute: _propTypes2.default.func.isRequired,
    pure: _propTypes2.default.bool
  };
  Memoize.defaultProps = {
    pure: false
  };


  (0, _reactLifecyclesCompat.polyfill)(Memoize);
  return Memoize;
};

var MemoizeOne = exports.MemoizeOne = createMemoizer(_memoizeOne2.default);
var MemoizeState = exports.MemoizeState = createMemoizer(_memoizeState2.default);

/* eslint-disable */
exports.default = MemoizeState;