diff --git a/package.json b/package.json
index 0fcb9d7f..d478d57b 100644
--- a/package.json
+++ b/package.json
@@ -61,6 +61,9 @@
       "js",
       "json"
     ],
+    "moduleNameMapper": {
+      "(.+)\\.js": "$1"
+    },
     "testEnvironment": "node",
     "testRegex": "(/tests/.*|(\\.|/)test)\\.ts$",
     "transform": {