.

src/data.rs

@@ -2,6 +2,7 @@
 
 use std::any::type_name;
 use std::convert::From;
+use std::convert::Infallible;
 use std::convert::TryFrom;
 use std::error::Error;
 use std::fmt;
@@ -247,6 +248,14 @@ impl DataError {
   }
 }
 
+impl From<Infallible> for DataError {
+  fn from(_: Infallible) -> Self {
+    // While we wait for the never type to stabilize, this allows us to convert from the Infallible
+    // type: https://github.com/rust-lang/rust/issues/35121
+    unreachable!()
+  }
+}
+
 impl Display for DataError {
   fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
     match self {

tests/test_api.rs

@@ -5309,6 +5309,9 @@ fn snapshot_creator() {
           context_data_index_2,
         );
       assert!(matches!(bad_type_err, Err(v8::DataError::BadType { .. })));
+      // Ensure we can compile a request for v8::Data
+      scope
+        .get_context_data_from_snapshot_once::<v8::Data>(context_data_index_2);
     }
   }
 }