feat: improve native

packages/common/native/src/lib.rs

@@ -4,3 +4,5 @@ pub mod doc_loader;
 pub mod doc_parser;
 #[cfg(feature = "hashcash")]
 pub mod hashcash;
+#[cfg(feature = "napi")]
+pub mod napi_utils;

packages/common/native/src/napi_utils.rs

@@ -0,0 +1,22 @@
+use std::fmt::{Debug, Display};
+
+use napi::{Error, Result, Status};
+
+pub fn to_napi_error<E: Display + Debug>(err: E, status: Status) -> Error {
+  Error::new(status, err.to_string())
+}
+
+pub fn map_napi_err<T, E: Display + Debug>(value: std::result::Result<T, E>, status: Status) -> Result<T> {
+  value.map_err(|err| to_napi_error(err, status))
+}
+
+#[cfg(test)]
+mod tests {
+  use super::*;
+
+  #[test]
+  fn map_napi_err_keeps_message() {
+    let err = map_napi_err::<(), _>(Err("boom"), Status::GenericFailure).unwrap_err();
+    assert!(err.to_string().contains("boom"));
+  }
+}