1 files changed, 9 insertions, 5 deletions
diff --git a/lib/__set__.js b/lib/__set__.js
index 49e4494..79175ed 100644
--- a/lib/__set__.js
+++ b/lib/__set__.js
@@ -8,14 +8,16 @@
  * @param {!String|!Object} varName name of the variable to set
  * @param {String} varValue new value
  * @throws {TypeError}
+ * @throws {ReferenceError} When the variable is unknown
  * @return {*}
  */
-module.exports = function __set__() {
+function __set__() {
     arguments.varName = arguments[0];
     arguments.varValue = arguments[1];
     arguments.src = "";
-    arguments.checkExistsSrc = function (varName) {
-        return "if (typeof " + varName + " === 'undefined') { throw new ReferenceError('Cannot __set__(): " + varName + " is not declared within the module.');} ";
+    arguments.checkExistsSrc = function (varName, varValue) {
+        return "if (typeof " + varName + " === 'undefined') { throw new ReferenceError('Cannot __set__(" + varName + ", " + varValue + "): " +
+            varName + " is not declared within the module.'); } ";
     };
 
     if (typeof arguments[0] === "object") {
@@ -32,10 +34,12 @@ module.exports = function __set__() {
         if (!arguments.varName) {
             throw new TypeError("__set__ expects a non-empty string as a variable name");
         }
-        arguments.src = arguments.checkExistsSrc(arguments.varName) + arguments.varName + " = arguments.varValue;";
+        arguments.src = arguments.checkExistsSrc(arguments.varName, arguments.varValue) + arguments.varName + " = arguments.varValue;";
     } else {
         throw new TypeError("__set__ expects an environment object or a non-empty string as a variable name");
     }
 
     eval(arguments.src);
-};
-\ No newline at end of file
+}
+
+module.exports = __set__;
+\ No newline at end of file