Merge pull request #13 from SecJS/feat/len-deep-copy

chore: copy method to Json Class

Author: jlenon7

README.md

@@ -27,7 +27,7 @@ yarn add @secjs/utils
 
 ### Json
 
-> Use Json to parse json without errors and more.
+> Use Json to parse json without errors, deep copy and more.
 
 ```js
 import { Json } from '@secjs/utils'
@@ -52,6 +52,22 @@ json.getJson(textWithJsons) // ['{"text":"hello"}', '{"hello":"world"}']
 const text = 'a string that is not a valid JSON'
 
 json.parse(text) // null
+
+
+const object = {
+  test: 'hello',
+  hello: () => 'hy',
+}
+
+const objectCopy = json.copy(object)
+
+objectCopy.test = 'hello from copy'
+objectCopy.hello = () => 'hy from copy'
+
+console.log(object.test) // hello
+console.log(object.hello()) // hy
+console.log(objectCopy.test) // hello from copy
+console.log(objectCopy.hello()) // hy from copy
 ```
 
 ---

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@secjs/utils",
-  "version": "1.3.3",
+  "version": "1.3.4",
   "description": "",
   "scripts": {
     "build": "tsc",

src/Classes/Json.ts

@@ -13,6 +13,24 @@ export class Json {
     return !results.includes(false)
   }
 
+  /**
+   * Deep copy any object properties without reference
+   *
+   * @param object The object to be copied
+   * @return A copy from object without any reference
+   */
+  copy<T>(object: T): T {
+    const copy: any = {}
+
+    for (const i in object) {
+      const item = object[i]
+      copy[i] =
+        item != null && typeof item === 'object' ? this.copy(item) : item
+    }
+
+    return copy
+  }
+
   /**
    * Find all JSON's inside string and return it.
    * @param text A valid string with one or more JSON's inside.

tests/Classes/json.spec.ts

@@ -20,6 +20,23 @@ describe('\n Json Class', () => {
     expect(json.isArrayOfObjects([1, 2, 3])).toBe(false)
   })
 
+  it('should return a deep copy from the object', async () => {
+    const object = {
+      test: 'hello',
+      hello: () => 'hy',
+    }
+
+    const objectCopy = json.copy(object)
+
+    objectCopy.test = 'hello from copy'
+    objectCopy.hello = () => 'hy from copy'
+
+    expect(object.test).toBe('hello')
+    expect(object.hello()).toBe('hy')
+    expect(objectCopy.test).toBe('hello from copy')
+    expect(objectCopy.hello()).toBe('hy from copy')
+  })
+
   it('should return all json found inside of the string', () => {
     const text =
       'this is a string with a json inside of it {"text":"hello"} and one more json {"hello":"world"}'