diff --git a/js/tsconfig.json b/js/tsconfig.json
index 12b5609..980389e 100644
--- a/js/tsconfig.json
+++ b/js/tsconfig.json
@@ -2,12 +2,13 @@
 "compilerOptions": {
     "resolveJsonModule": true,
     "noImplicitAny": false,
-    "lib": ["dom", "es5", "es2015.promise", "es2015.iterable"],
+    "lib": ["dom", "es2015"],
     "strictNullChecks": true,
     "module": "commonjs",
     "moduleResolution": "node",
     "target": "es2015",
     "outDir": "lib",
+    "rootDir": "src",
     "skipLibCheck": true,
     "strictNullChecks": false,
     "inlineSourceMap": true