Compare two objects are the same depth

/** * Deeply compares whether two objects are the same * @param {Object} oldData * @param {Object} newData */
export const equals2Obj = (oldData, newData) => {
    
  // When the type is a primitive type,如果相同,则返回true
  if (oldData === newData) return true
  if (isObject(oldData) && isObject(newData) && Object.keys(oldData).length === Object.keys(newData).length) {
    
    // The type is object and the number of elements is the same

    // Iterate over all properties in all objects,判断元素是否相同
    for (const key in oldData) {
    
      if (Object.prototype.hasOwnProperty.call(oldData, key)) {
    
        if (!equals2Obj(oldData[key], newData[key])) {
    
          // Objects have different properties 返回false
          return false
        }
      }
    }
  } else if (isArray(oldData) && isArray(newData) && oldData.length === newData.length) {
    
    // The type is an array and the arrays have the same length
    for (let i = 0, length = oldData.length; i < length; i++) {
    
      if (!equals2Obj(oldData[i], newData[i])) {
    
        // If the array elements have different elements,返回false
        return false
      }
    }
  } else {
    
    // 其它类型,均返回false
    return false
  }

  // 走到这里,Indicates that all elements in an array or object are the same,返回true
  return true
}