diff --git a/src/package.json b/src/package.json
new file mode 100644
index 0000000..3dbc1ca
--- /dev/null
+++ b/src/package.json
@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}
diff --git a/test/package.json b/test/package.json
new file mode 100644
index 0000000..3dbc1ca
--- /dev/null
+++ b/test/package.json
@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}