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node_modules/deepmerge/dist/umd.js 3.47 KB
2a09d1a4   liuqimichale   添加宜春 天水 宣化
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  (function (global, factory) {
  	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  	typeof define === 'function' && define.amd ? define(factory) :
  	(global.deepmerge = factory());
  }(this, (function () { 'use strict';
  
  var isMergeableObject = function isMergeableObject(value) {
  	return isNonNullObject(value)
  		&& !isSpecial(value)
  };
  
  function isNonNullObject(value) {
  	return !!value && typeof value === 'object'
  }
  
  function isSpecial(value) {
  	var stringValue = Object.prototype.toString.call(value);
  
  	return stringValue === '[object RegExp]'
  		|| stringValue === '[object Date]'
  		|| isReactElement(value)
  }
  
  // see https://github.com/facebook/react/blob/b5ac963fb791d1298e7f396236383bc955f916c1/src/isomorphic/classic/element/ReactElement.js#L21-L25
  var canUseSymbol = typeof Symbol === 'function' && Symbol.for;
  var REACT_ELEMENT_TYPE = canUseSymbol ? Symbol.for('react.element') : 0xeac7;
  
  function isReactElement(value) {
  	return value.$$typeof === REACT_ELEMENT_TYPE
  }
  
  function emptyTarget(val) {
      return Array.isArray(val) ? [] : {}
  }
  
  function cloneIfNecessary(value, optionsArgument) {
      var clone = optionsArgument && optionsArgument.clone === true;
      return (clone && isMergeableObject(value)) ? deepmerge(emptyTarget(value), value, optionsArgument) : value
  }
  
  function defaultArrayMerge(target, source, optionsArgument) {
      var destination = target.slice();
      source.forEach(function(e, i) {
          if (typeof destination[i] === 'undefined') {
              destination[i] = cloneIfNecessary(e, optionsArgument);
          } else if (isMergeableObject(e)) {
              destination[i] = deepmerge(target[i], e, optionsArgument);
          } else if (target.indexOf(e) === -1) {
              destination.push(cloneIfNecessary(e, optionsArgument));
          }
      });
      return destination
  }
  
  function mergeObject(target, source, optionsArgument) {
      var destination = {};
      if (isMergeableObject(target)) {
          Object.keys(target).forEach(function(key) {
              destination[key] = cloneIfNecessary(target[key], optionsArgument);
          });
      }
      Object.keys(source).forEach(function(key) {
          if (!isMergeableObject(source[key]) || !target[key]) {
              destination[key] = cloneIfNecessary(source[key], optionsArgument);
          } else {
              destination[key] = deepmerge(target[key], source[key], optionsArgument);
          }
      });
      return destination
  }
  
  function deepmerge(target, source, optionsArgument) {
      var sourceIsArray = Array.isArray(source);
      var targetIsArray = Array.isArray(target);
      var options = optionsArgument || { arrayMerge: defaultArrayMerge };
      var sourceAndTargetTypesMatch = sourceIsArray === targetIsArray;
  
      if (!sourceAndTargetTypesMatch) {
          return cloneIfNecessary(source, optionsArgument)
      } else if (sourceIsArray) {
          var arrayMerge = options.arrayMerge || defaultArrayMerge;
          return arrayMerge(target, source, optionsArgument)
      } else {
          return mergeObject(target, source, optionsArgument)
      }
  }
  
  deepmerge.all = function deepmergeAll(array, optionsArgument) {
      if (!Array.isArray(array) || array.length < 2) {
          throw new Error('first argument should be an array with at least two elements')
      }
  
      // we are sure there are at least 2 values, so it is safe to have no initial value
      return array.reduce(function(prev, next) {
          return deepmerge(prev, next, optionsArgument)
      })
  };
  
  var deepmerge_1 = deepmerge;
  
  return deepmerge_1;
  
  })));