How to send a HashMap from Rust side to Javascript as Map instead of Object?

[CrendKing]

I noticed if a Rust command returns a HashMap<K, V>, it is received in Javascript as Object. Is there a way to change it to Javascript Map<K, V> instead? What code controls the transformation? Thank you!

[CrendKing]

Did some search and my findings are:

1. The returned data from Rust command is serialized to JSON by serde_json.
2. The data is sent to Javascript side via HTTP request.
3. Upon receiving the response, the IPC code calls response.json(), which automatically deserializes the JSON object into Javascript object.

It seems we have to manually create a new Map from the object in the invoke result (e.g. new Map(Object.entries(value)))?

[FabianLars]

It seems we have to manually create a new Map from the object in the invoke result (e.g. new Map(Object.entries(value)))?

yep