diff --git a/js/index.js b/js/index.js
new file mode 100644
index 00000000..bf291bb1
--- /dev/null
+++ b/js/index.js
@@ -0,0 +1,48 @@
+let callbackCounter = 0;
+function getUniqueCallbackName() {
+  return `_callback_${Date.now()}_${callbackCounter++}`;
+}
+
+function exec(command, options) {
+  if (typeof options === "undefined") {
+    options = {};
+  }
+
+  return new Promise((resolve, reject) => {
+    // Generate a unique callback function name
+    const callbackFuncName = getUniqueCallbackName();
+
+    // Define the success callback function
+    window[callbackFuncName] = (stdout, stderr) => {
+      resolve({ stdout, stderr });
+      cleanup(callbackFuncName);
+    };
+
+    // Define the failure callback function
+    const errorFuncName = callbackFuncName + "_error";
+    window[errorFuncName] = (error) => {
+      reject(error);
+      cleanup(callbackFuncName, errorFuncName);
+    };
+
+    // Cleanup function to remove the callbacks
+    function cleanup(successName, errorName = successName) {
+      delete window[successName];
+      if (errorName) {
+        delete window[errorName];
+      }
+    }
+
+    try {
+      ksu.exec(
+        command,
+        JSON.stringify(options),
+        callbackFuncName,
+        errorFuncName
+      );
+    } catch (error) {
+      reject(error);
+      cleanup(callbackFuncName, errorFuncName);
+    }
+  });
+}
diff --git a/js/package.json b/js/package.json
new file mode 100644
index 00000000..8b6b5ec8
--- /dev/null
+++ b/js/package.json
@@ -0,0 +1,25 @@
+{
+  "name": "kernelsu",
+  "version": "1.0.0",
+  "description": "Library for KernelSU's module WebUI",
+  "main": "index.js",
+  "scripts": {
+    "test": "npm run test"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/tiann/KernelSU.git"
+  },
+  "keywords": [
+    "su",
+    "kernelsu",
+    "module",
+    "webui"
+  ],
+  "author": "weishu",
+  "license": "GPL-3.0-or-later",
+  "bugs": {
+    "url": "https://github.com/tiann/KernelSU/issues"
+  },
+  "homepage": "https://github.com/tiann/KernelSU#readme"
+}