diff --git a/tsconfig.json b/tsconfig.json
index b2a0d11..351e46c 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,7 +2,7 @@
     "compilerOptions": {
         "target":"ES2018",
         "module": "commonjs",
-        "lib": ["es2016", "es2017.object", "es2017.string"],
+        "lib": ["es2016", "es2017.object", "es2017.string", "es2018", "dom"],
         "strict": true,
         "noImplicitAny": true,
         "strictNullChecks": true,