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import assignMergeValue from './_assignMergeValue.js';import baseClone from './_baseClone.js';import copyArray from './_copyArray.js';import isArguments from './isArguments.js';import isArray from './isArray.js';import isArrayLikeObject from './isArrayLikeObject.js';import isFunction from './isFunction.js';import isObject from './isObject.js';import isPlainObject from './isPlainObject.js';import isTypedArray from './isTypedArray.js';import toPlainObject from './toPlainObject.js';
/** * A specialized version of `baseMerge` for arrays and objects which performs * deep merges and tracks traversed objects enabling objects with circular * references to be merged. * * @private * @param {Object} object The destination object. * @param {Object} source The source object. * @param {string} key The key of the value to merge. * @param {number} srcIndex The index of `source`. * @param {Function} mergeFunc The function to merge values. * @param {Function} [customizer] The function to customize assigned values. * @param {Object} [stack] Tracks traversed source values and their merged *  counterparts. */function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {  var objValue = object[key],      srcValue = source[key],      stacked = stack.get(srcValue);
  if (stacked) {    assignMergeValue(object, key, stacked);    return;  }  var newValue = customizer    ? customizer(objValue, srcValue, (key + ''), object, source, stack)    : undefined;
  var isCommon = newValue === undefined;
  if (isCommon) {    newValue = srcValue;    if (isArray(srcValue) || isTypedArray(srcValue)) {      if (isArray(objValue)) {        newValue = objValue;      }      else if (isArrayLikeObject(objValue)) {        newValue = copyArray(objValue);      }      else {        isCommon = false;        newValue = baseClone(srcValue, true);      }    }    else if (isPlainObject(srcValue) || isArguments(srcValue)) {      if (isArguments(objValue)) {        newValue = toPlainObject(objValue);      }      else if (!isObject(objValue) || (srcIndex && isFunction(objValue))) {        isCommon = false;        newValue = baseClone(srcValue, true);      }      else {        newValue = objValue;      }    }    else {      isCommon = false;    }  }  if (isCommon) {    // Recursively merge objects and arrays (susceptible to call stack limits).    stack.set(srcValue, newValue);    mergeFunc(newValue, srcValue, srcIndex, customizer, stack);    stack['delete'](srcValue);  }  assignMergeValue(object, key, newValue);}
export default baseMergeDeep;