JS Typed Arrays (like Uint8Array) should be supported

[vlukashov]

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When transferring primitive array-like data using Connect endpoints, I want primitive Java arrays like byte[] to be mapped to typed JS arrays like Int8Array, so that (a) the transfer is more efficient in terms of how many bytes are sent over the wire and (b) I do not have to write the boilerplate code to convert from a typed array into an regular JS array of numbers.

Example:

@VaadinService
public class DataService {
    public void foo(byte[] data) {
    }
}

export function foo(
  data: Int8Array
): Promise<void>

source

[haijian-vaadin]

The first solution could be based on base64 encoding, later it can be improved to multi-part requests.

[mvysny]

Would be good to add support for Int8Array/byte[] to @ClientCallable as well.

[Legioth]

@ClientCallable is a completely separate thing from the implementation point of view. Could you please create a separate ticket about that?