FIX: Don not clone Locales and Languages, pass them by reference

bindings/wasm/src/lib.rs

@@ -59,9 +59,13 @@ struct DefinedName {
     formula: String,
 }
 
+fn leak_str(s: &str) -> &'static str {
+    Box::leak(s.to_owned().into_boxed_str())
+}
+
 #[wasm_bindgen]
 pub struct Model {
-    model: BaseModel,
+    model: BaseModel<'static>,
 }
 
 #[wasm_bindgen]
@@ -73,12 +77,17 @@ impl Model {
         timezone: &str,
         language_id: &str,
     ) -> Result<Model, JsError> {
+        let name = leak_str(name);
+        let locale = leak_str(locale);
+        let timezone = leak_str(timezone);
+        let language_id = leak_str(language_id);
         let model =
             BaseModel::new_empty(name, locale, timezone, language_id).map_err(to_js_error)?;
         Ok(Model { model })
     }
 
     pub fn from_bytes(bytes: &[u8], language_id: &str) -> Result<Model, JsError> {
+        let language_id = leak_str(language_id);
         let model = BaseModel::from_bytes(bytes, language_id).map_err(to_js_error)?;
         Ok(Model { model })
     }