vtils/_cjs/utils/cloneDeepFast.js

一个面向业务的 JavaScript/TypeScript 实用程序库。

"use strict";

exports.__esModule = true;
exports.cloneDeepFast = cloneDeepFast;
// @ts-nocheck
// Copyright 2019 "David Mark Clements <david.mark.clements@gmail.com>"
// MIT Licensed
// https://github.com/davidmarkclements/rfdc
// Modified by Jay Fong
/**
 * 深克隆快速版。
 *
 * @param value 要克隆的值
 * @param ignore 忽略的值
 * @returns 返回克隆后的值
 * @example
 * ```typescript
 * cloneDeepFast({ x: [1] })
 * // => { x: [1] }
 * ```
 */
function cloneDeepFast(value, ignore) {
  if (typeof value !== 'object' || value === null) return value;
  if (value instanceof Date) return new Date(value);
  if (Array.isArray(value)) return cloneArray(value, ignore);
  var o2 = {};
  for (var k in value) {
    if (Object.hasOwnProperty.call(value, k) === false) continue;
    var cur = value[k];
    if (typeof cur !== 'object' || cur === null || ignore && ignore(cur)) {
      o2[k] = cur;
    } else if (cur instanceof Date) {
      o2[k] = new Date(cur);
    } else {
      o2[k] = cloneDeepFast(cur, ignore);
    }
  }
  return o2;
}
function cloneArray(a, ignore) {
  var keys = Object.keys(a);
  var a2 = new Array(keys.length);
  for (var i = 0; i < keys.length; i++) {
    var k = keys[i];
    var cur = a[k];
    if (typeof cur !== 'object' || cur === null || ignore && ignore(cur)) {
      a2[k] = cur;
    } else if (cur instanceof Date) {
      a2[k] = new Date(cur);
    } else {
      a2[k] = cloneDeepFast(cur, ignore);
    }
  }
  return a2;
}