diff --git a/lib/tsconfig.json b/lib/tsconfig.json
index 86f7dba..9f3a5ef 100644
--- a/lib/tsconfig.json
+++ b/lib/tsconfig.json
@@ -4,6 +4,7 @@
     "allowSyntheticDefaultImports": true,
     "declaration": true,
     "esModuleInterop": true,
+    "inlineSources": true,
     "lib": ["dom", "es2017"],
     "module": "esnext",
     "moduleResolution": "node",