update: 完成cloneDeep

HeftyKoo · Apr 19, 2020 · 15b2b42 · 15b2b42
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diff --git a/README.md b/README.md
@@ -223,6 +223,7 @@
 * [castArray](castArray.md)
 * [keysIn](keysIn.md)
 * [clone](clone.md)
+* [cloneDeep](cloneDeep.md)
 
 ## License
 

diff --git a/SUMMARY.md b/SUMMARY.md
@@ -202,4 +202,5 @@
 + [castArray](castArray.md)
 + [keysIn](keysIn.md)
 + [clone](clone.md)
++ [cloneDeep](cloneDeep.md)
 
diff --git a/cloneDeep.md b/cloneDeep.md
@@ -0,0 +1,36 @@
+# lodash源码分析之cloneDeep
+
+本文为读 lodash 源码的第二百篇，后续文章会更新到这个仓库中，欢迎 star：[pocket-lodash](https://github.com/yeyuqiudeng/pocket-lodash)
+
+gitbook也会同步仓库的更新，gitbook地址：[pocket-lodash](https://www.gitbook.com/book/yeyuqiudeng/pocket-lodash/details)
+
+## 依赖
+
+```javascript
+import baseClone from './.internal/baseClone.js'
+```
+
+[《lodash源码分析之baseClone》](internal/baseClone.md)
+
+
+## 源码分析
+
+`cloneDeep` 会对传入的 `value` 做深度复制，源码如下：
+
+```javascript
+const CLONE_DEEP_FLAG = 1
+const CLONE_SYMBOLS_FLAG = 4
+function cloneDeep(value) {
+  return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG)
+}
+```
+
+和 `clone` 一样，也是调用 `baseClone` 来实现，只不过 `bitmask` 传入的是 `CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG` ，也即开启深度复制和复制 `Symbol` 属性。
+
+## License
+
+[署名-非商业性使用-禁止演绎 4.0 国际 (CC BY-NC-ND 4.0)](http://creativecommons.org/licenses/by-nc-nd/4.0/)
+
+最后，所有文章都会同步发送到微信公众号上，欢迎关注,欢迎提意见：  ![](https://raw.githubusercontent.com/yeyuqiudeng/resource/master/images/qrcode_front-end-article.jpg) 
+
+作者：对角另一面