diff --git a/index.js b/index.js
index fa42fbc..b178ca8 100644
--- a/index.js
+++ b/index.js
@@ -189,4 +189,3 @@ function serializeProperty(metadata, prop) {
     }
     return serialize(prop);
 }
-//# sourceMappingURL=index.js.map
\ No newline at end of file
diff --git a/libs/utils.js b/libs/utils.js
index f3f446f..68cd2aa 100644
--- a/libs/utils.js
+++ b/libs/utils.js
@@ -16,4 +16,3 @@ function isArrayOrArrayClass(clazz) {
     return Object.prototype.toString.call(clazz) === '[object Array]';
 }
 exports.isArrayOrArrayClass = isArrayOrArrayClass;
-//# sourceMappingURL=utils.js.map
\ No newline at end of file
diff --git a/libs/utils.js.map b/libs/utils.js.map
new file mode 100644
index 0000000..fd149c4
--- /dev/null
+++ b/libs/utils.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["utils.js"],"names":["isTargetType","val","type","isPrimitiveOrPrimitiveClass","obj","indexOf","String","Number","Boolean","isArrayOrArrayClass","clazz","Array","Object","prototype","toString","call","exports"],"mappings":"AAAA,aACA,SAASA,aAAaC,EAAKC,GACvB,cAAcD,IAAQC,EAG1B,SAASC,4BAA4BC,GACjC,UAAW,SAAU,UAAW,UAAUC,eAAgBD,IAAS,GAAMA,aAAeE,QAAUF,IAAQE,QACtGF,aAAeG,QAAUH,IAAQG,QACjCH,aAAeI,SAAWJ,IAAQI,SAG1C,SAASC,oBAAoBC,GACzB,OAAIA,IAAUC,OAGmC,mBAA1CC,OAAOC,UAAUC,SAASC,KAAKL,GAX1CM,QAAQhB,aAAeA,aAMvBgB,QAAQb,4BAA8BA,4BAOtCa,QAAQP,oBAAsBA","file":"utils.js.map"}
diff --git a/tsconfig.json b/tsconfig.json
index 833260a..b60b1bf 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "module": "commonjs",
     "target": "es5",
-    "sourceMap": true,
+    "sourceMap": false,
     "experimentalDecorators": true,
     "emitDecoratorMetadata": true,
     "noImplicitAny": true
@@ -10,4 +10,4 @@
   "exclude": [
     "node_modules"
   ]
-}
\ No newline at end of file
+}