@mucfe/matui/lib/utils/fastcopy/index.js

基于Vue和ElementUi的PC组件库

"use strict";

exports.__esModule = true;
exports.default = copy;

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

// utils

/**
 * @function copy
 *
 * @description
 * deeply copy the object to a new object of the same type
 *
 * @param {any} object the object to copy
 * @param {any} [realm=global] the realm to check instanceof in
 * @returns {any} the copied object
 */
function copy(object, realm) {
  if (realm === void 0) {
    realm = global;
  }

  var cache = (0, _utils.getNewCache)();

  var handleCopy = function handleCopy(object) {
    if (!(0, _utils.isObjectCopyable)(object, cache)) {
      return object;
    }

    if (Array.isArray(object)) {
      cache.add(object);
      return (0, _utils.copyArray)(object, handleCopy, realm);
    }

    if (object.constructor === realm.Object) {
      cache.add(object);
      return (0, _utils.copyObject)(object, handleCopy, realm, true);
    }

    if (object instanceof realm.Date) {
      return new Date(object.getTime());
    }

    if (object instanceof realm.RegExp) {
      return (0, _utils.copyRegExp)(object, realm);
    }

    if (realm.Map && object instanceof realm.Map) {
      cache.add(object);
      return (0, _utils.copyMap)(object, handleCopy, realm);
    }

    if (realm.Set && object instanceof realm.Set) {
      cache.add(object);
      return (0, _utils.copySet)(object, handleCopy, realm);
    }

    if (realm.Buffer && realm.Buffer.isBuffer(object)) {
      return (0, _utils.copyBuffer)(object, realm);
    }

    if (realm.ArrayBuffer) {
      if (realm.ArrayBuffer.isView(object)) {
        return (0, _utils.copyTypedArray)(object);
      }

      if (object instanceof realm.ArrayBuffer) {
        return (0, _utils.copyArrayBuffer)(object);
      }
    }

    if ((0, _utils.shouldObjectBeCopied)(object, realm)) {
      cache.add(object);
      return (0, _utils.copyObject)(object, handleCopy, realm);
    }

    return object;
  };

  return handleCopy(object);
}