review fix: fix DbNamespaceId enum to be wasm only and inline `for_…

…test_with_id`

mm2src/mm2_core/src/lib.rs

@@ -1,10 +1,11 @@
-use derive_more::Display;
-use rand::{thread_rng, Rng};
+#[cfg(target_arch = "wasm32")] use derive_more::Display;
+#[cfg(target_arch = "wasm32")] use rand::{thread_rng, Rng};
 
 pub mod data_asker;
 pub mod event_dispatcher;
 pub mod mm_ctx;
 
+#[cfg(target_arch = "wasm32")]
 #[derive(Clone, Copy, Display, PartialEq, Default)]
 pub enum DbNamespaceId {
     #[display(fmt = "MAIN")]
@@ -14,11 +15,13 @@ pub enum DbNamespaceId {
     Test(u64),
 }
 
+#[cfg(target_arch = "wasm32")]
 impl DbNamespaceId {
     pub fn for_test() -> DbNamespaceId {
         let mut rng = thread_rng();
         DbNamespaceId::Test(rng.gen())
     }
 
+    #[inline(always)]
     pub fn for_test_with_id(id: u64) -> DbNamespaceId { DbNamespaceId::Test(id) }
 }