diff --git a/src/v2/legacyParse/index.ts b/src/v2/legacyParse/index.ts
index d7214a8..6144609 100644
--- a/src/v2/legacyParse/index.ts
+++ b/src/v2/legacyParse/index.ts
@@ -1,4 +1,4 @@
-import { isDate } from 'date-fns'
+import isDate from 'date-fns/isDate'
 
 const MILLISECONDS_IN_HOUR = 3600000
 const MILLISECONDS_IN_MINUTE = 60000
diff --git a/tsconfig.json b/tsconfig.json
index 1ee38db..c0cb023 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -8,7 +8,9 @@
     "outDir": "lib",
     "strict": true,
     "noImplicitAny": true,
-    "allowSyntheticDefaultImports": true
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "moduleResolution": "node"
   },
   "exclude": ["**/test.ts", "lib", "node_modules"]
 }