'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var _extends = require('../../../@babel/runtime/helpers/esm/extends.js');
var verifyPlainObject = require('../utils/verifyPlainObject.js');

function defaultMergeProps(stateProps, dispatchProps, ownProps) {
  return _extends({}, ownProps, {}, stateProps, {}, dispatchProps);
}
function wrapMergePropsFunc(mergeProps) {
  return function initMergePropsProxy(dispatch, _ref) {
    var displayName = _ref.displayName,
        pure = _ref.pure,
        areMergedPropsEqual = _ref.areMergedPropsEqual;
    var hasRunOnce = false;
    var mergedProps;
    return function mergePropsProxy(stateProps, dispatchProps, ownProps) {
      var nextMergedProps = mergeProps(stateProps, dispatchProps, ownProps);

      if (hasRunOnce) {
        if (!pure || !areMergedPropsEqual(nextMergedProps, mergedProps)) mergedProps = nextMergedProps;
      } else {
        hasRunOnce = true;
        mergedProps = nextMergedProps;
        if (process.env.NODE_ENV !== 'production') verifyPlainObject(mergedProps, displayName, 'mergeProps');
      }

      return mergedProps;
    };
  };
}
function whenMergePropsIsFunction(mergeProps) {
  return typeof mergeProps === 'function' ? wrapMergePropsFunc(mergeProps) : undefined;
}
function whenMergePropsIsOmitted(mergeProps) {
  return !mergeProps ? function () {
    return defaultMergeProps;
  } : undefined;
}
var defaultMergePropsFactories = [whenMergePropsIsFunction, whenMergePropsIsOmitted];

exports.default = defaultMergePropsFactories;
exports.defaultMergeProps = defaultMergeProps;
exports.whenMergePropsIsFunction = whenMergePropsIsFunction;
exports.whenMergePropsIsOmitted = whenMergePropsIsOmitted;
exports.wrapMergePropsFunc = wrapMergePropsFunc;
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