add jsonParser

package.json

@@ -1,6 +1,6 @@
 {
   "name": "localcache-meisam",
-  "version": "2.4.0",
+  "version": "2.5.0",
   "description": "[personal] An Express.js API for managing in-memory and local storage.",
   "main": "src/models/index.js",
   "type": "module",

src/models/inMemoryStorage.js

@@ -1,18 +1,21 @@
+import { jsonParser } from "../utils/common.js";
+
 class InMemoryStorage {
   constructor() {
     this.storage = {};
   }
 
   setItem(key, value) {
-    this.storage[key] = value;
+    this.storage[key] = JSON.stringify(value);
   }
 
   getItem(...keys) {
     const result = {};
     for (const key of keys) {
-      result[key] = this.storage[key] || null;
+      const value = this.storage[key] || null;
+      result[key] = jsonParser(value);
     }
-    return JSON.stringify(result);
+    return result;
   }
 
   getAll() {

src/models/localStorage.js

@@ -1,6 +1,7 @@
 import fs from "fs";
 import path from "path";
 import { LocalStorage as NodeLocalStorage } from "node-localstorage";
+import { jsonParser } from "../utils/common.js";
 
 class LocalStorage {
   constructor(dir) {
@@ -12,15 +13,16 @@ class LocalStorage {
   }
 
   setItem(key, value) {
-    this.storage.setItem(key, value);
+    this.storage.setItem(key, JSON.stringify(value));
   }
 
   getItem(...keys) {
     const result = {};
     for (const key of keys) {
-      result[key] = this.storage.getItem(key) || null;
+      const value = this.storage.getItem(key) || null;
+      result[key] = jsonParser(value);
     }
-    return JSON.stringify(result);
+    return result;
   }
 
   removeItem(...keys) {

src/utils/common.js

@@ -0,0 +1,21 @@
+import Msg from "./msg.js";
+
+function isJson(str) {
+  const result = new Msg();
+  try {
+    result.obj = JSON.parse(str);
+    result.success = true;
+  } catch (e) {
+    result.msg = e;
+    result.success = false;
+  }
+  return result;
+}
+
+export function jsonParser(str) {
+  const _isJson = isJson(str);
+  if (_isJson.success) {
+    return _isJson.obj;
+  }
+  return str;
+}