feat: add support set/get object

Author: ngocle2497

README.md

@@ -155,18 +155,17 @@ storage.clearAll()
 
 ### Objects
 
-```js
+```tsx
 const user = {
   username: 'Marc',
   age: 21
 }
 
-// Serialize the object into a JSON string
-storage.set('user', JSON.stringify(user))
+// Set
+storage.setObject('user', user)
 
-// Deserialize the JSON string into an object
-const jsonUser = storage.getString('user') // { 'username': 'Marc', 'age': 21 }
-const userObject = JSON.parse(jsonUser)
+// Get
+const userObject = storage.getObject<typeof user>('user') // {name: 'Marc', age: 21}
 ```
 
 ### Encryption

example/.eslintrc.js

@@ -0,0 +1,11 @@
+module.exports = {
+  parser: '@typescript-eslint/parser',
+  plugins: [],
+  parserOptions: {
+    sourceType: 'module',
+  },
+  env: {
+    node: true,
+    es2020: true,
+  },
+};

src/MMKV.ts

@@ -185,6 +185,15 @@ export class MMKV implements MMKVInterface {
 
     this.onValuesChanged([key]);
   }
+  setObject(key: string, value: any): boolean {
+    try {
+      this.getFunctionFromCache('set')(key, JSON.stringify(value));
+      this.onValuesChanged([key]);
+      return true;
+    } catch {
+      return false;
+    }
+  }
   getBoolean(key: string): boolean | undefined {
     const func = this.getFunctionFromCache('getBoolean');
     return func(key);
@@ -193,6 +202,14 @@ export class MMKV implements MMKVInterface {
     const func = this.getFunctionFromCache('getString');
     return func(key);
   }
+  getObject<T = any>(key: string): T | null {
+    try {
+      const valueString = this.getFunctionFromCache('getString')(key);
+      return typeof valueString === 'string' ? JSON.parse(valueString) : null;
+    } catch {
+      return null;
+    }
+  }
   getNumber(key: string): number | undefined {
     const func = this.getFunctionFromCache('getNumber');
     return func(key);

src/createMMKV.web.ts

@@ -26,7 +26,7 @@ export const createMMKV = (config: MMKVConfiguration): NativeMMKV => {
   if (config.path != null) {
     throw new Error("MMKV: 'path' is not supported on Web!");
   }
-  
+
   // canUseDOM check prevents spam in Node server environments, such as Next.js server side props.
   if (!hasAccessToLocalStorage() && canUseDOM) {
     console.warn(