Rearrange module files

Author: flosse

src/app.rs renamed to src/app/mod.rs

@@ -0,0 +1,17 @@
+use serde::{de::DeserializeOwned, Serialize};
+use serde_wasm_bindgen as swb;
+use wasm_bindgen::JsValue;
+
+pub fn from_js_value<T>(v: &JsValue) -> Result<T, JsValue>
+where
+    T: DeserializeOwned,
+{
+    Ok(swb::from_value(v.into())?)
+}
+
+pub fn to_js_value<T>(v: &T) -> Result<JsValue, JsValue>
+where
+    T: Serialize + ?Sized,
+{
+    Ok(v.serialize(&swb::Serializer::json_compatible())?)
+}