add prettier

src/index.js

@@ -35,6 +35,9 @@ Prop.prototype = {
   on: function (eventname, callback) {
     on(this.name, eventname, callback);
   },
+  use: function (callback) {
+    use(this.name, callback);
+  },
 };
 
 /**
@@ -118,4 +121,12 @@ function on_function(eventname, name, value) {
   }
 }
 
+function use(name, callback) {
+  let value = getprop(name);
+
+  callback(value);
+
+  deleteprop(name);
+}
+
 module.exports = { setprop, getprop, deleteprop, on, Prop };

test/test.js

@@ -133,4 +133,13 @@ describe("varkeeper", () => {
       assert.equal(result, true);
     });
   });
+
+  describe("varkeeper use funtion OOP", () => {
+      let x = new varkeeper.Prop("test", "value");
+      x.use((value) => {
+        console.log(value);
+      });
+  });
+
+
 });