diff --git a/core/util/package.json b/core/util/package.json
index ea868dfc7..11566edf7 100644
--- a/core/util/package.json
+++ b/core/util/package.json
@@ -32,6 +32,8 @@
     "url": "https://github.com/AliMD/alwatr/issues"
   },
   "dependencies": {
-    "tslib": "^2.5.0"
+    "tslib": "^2.5.0",
+    "@alwatr/math": "^0.29.0",
+    "@alwatr/type": "^0.29.0"
   }
 }
diff --git a/core/util/src/index.ts b/core/util/src/index.ts
index e36815a83..bc5a45ebe 100644
--- a/core/util/src/index.ts
+++ b/core/util/src/index.ts
@@ -1 +1,4 @@
 export * from './delay.js';
+export * from './json.js';
+export * from './local-storage.js';
+export * from './client-id.js';
diff --git a/core/util/src/json.ts b/core/util/src/json.ts
new file mode 100644
index 000000000..6a2d441e4
--- /dev/null
+++ b/core/util/src/json.ts
@@ -0,0 +1,11 @@
+import type {Stringifyable} from '@alwatr/type';
+
+export const parseJson = <T extends Stringifyable>(str: string): T | null => {
+  try {
+    return JSON.parse(str) as T;
+  }
+  catch (err) {
+    console.error(err);
+    return null;
+  }
+};
diff --git a/core/util/tsconfig.json b/core/util/tsconfig.json
index d26028499..f3c2df152 100644
--- a/core/util/tsconfig.json
+++ b/core/util/tsconfig.json
@@ -9,5 +9,8 @@
 
   "include": ["src/**/*.ts"],
   "exclude": [],
-  "references": [{"path": "../math"}]
+  "references": [
+    {"path": "../type"},
+    {"path": "../math"},
+  ]
 }