refun/native/map-with-props-memo.js

A collection of React Hook-enabled functions that compose harmoniously with each other. Similar to `recompose`, but:

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

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.mapWithPropsMemo = void 0;

var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));

var _react = require("react");

var _tsfn = require("tsfn");

var _utils = require("./utils");

var mapWithPropsMemo = function mapWithPropsMemo(getFn, watchKeys) {
  return function (props) {
    var prevProps = (0, _react.useRef)(_tsfn.EMPTY_OBJECT);
    var prevResult = (0, _react.useRef)(_tsfn.EMPTY_OBJECT);

    if (prevResult.current === _tsfn.EMPTY_OBJECT || !(0, _utils.shallowEqualByKeys)(prevProps.current, props, watchKeys)) {
      prevProps.current = props;
      prevResult.current = getFn(props);
    }

    return (0, _extends2.default)({}, props, prevResult.current);
  };
};

exports.mapWithPropsMemo = mapWithPropsMemo;
//# sourceMappingURL=map-with-props-memo.js.map