diff --git a/program.own b/program.own
index cdf16cb..0cda45e 100644
--- a/program.own
+++ b/program.own
@@ -111,3 +111,19 @@ for (v : arr1 << arr2) print "" + v + ", "
 print "\n"
 for v : [1,2,3,4,5,6,7,8,9] print "" + v + ", "
 
+use "types"
+print "\n"
+print typeof(1)
+print "\n"
+print typeof("1")
+print "\n"
+print typeof(arr1)
+print "\n"
+print typeof({})
+print "\n"
+print typeof(add)
+
+print "\n"
+print typeof(number("1"))
+print "\n"
+print typeof(string(1))
\ No newline at end of file
diff --git a/src/com/annimon/ownlang/lib/modules/types.java b/src/com/annimon/ownlang/lib/modules/types.java
new file mode 100644
index 0000000..e82d2a2
--- /dev/null
+++ b/src/com/annimon/ownlang/lib/modules/types.java
@@ -0,0 +1,24 @@
+package com.annimon.ownlang.lib.modules;
+
+import com.annimon.ownlang.lib.*;
+
+/**
+ *
+ * @author aNNiMON
+ */
+public final class types implements Module {
+
+    @Override
+    public void init() {
+        Variables.set("OBJECT", new NumberValue(Types.OBJECT));
+        Variables.set("NUMBER", new NumberValue(Types.NUMBER));
+        Variables.set("STRING", new NumberValue(Types.STRING));
+        Variables.set("ARRAY", new NumberValue(Types.ARRAY));
+        Variables.set("MAP", new NumberValue(Types.MAP));
+        Variables.set("FUNCTION", new NumberValue(Types.FUNCTION));
+        
+        Functions.set("typeof", args -> new NumberValue(args[0].type()));
+        Functions.set("string", args -> new StringValue(args[0].asString()));
+        Functions.set("number", args -> new NumberValue(args[0].asNumber()));
+    }
+}