build: add files field

cossssmin · cossssmin · commit baeadc31fbfe · 2023-02-15T15:05:40.000+02:00
diff --git a/package.json b/package.json
@@ -37,5 +37,8 @@
     "c8": "^7.12.0",
     "np": "^7.6.2",
     "xo": "^0.39.1"
-  }
+  },
+  "files": [
+    "lib"
+  ]
 }
