fix: use namespace explicitly

cometkim · cometkim · commit 867a780bb991 · 2023-05-10T23:44:31.000+09:00
diff --git a/bsconfig.json b/bsconfig.json
@@ -1,5 +1,6 @@
 {
   "name": "rescript-tinybench",
+  "namespace": true,
   "suffix": ".bs.mjs",
   "sources": [
     {
