kernel-messaging: to get the returned value instead of a JSON for display

[MRYingLEE]

Problem

In the example kernel-messaging, for the code "3+5", JSON object {"data": {"text/plain":"8"},...} will be returned and displayed. Actually, the logic value is 5 instead of "5". It is hard for the following code to consume the result.

Just wonder there is an intuitive way to get the returned value from code instead of something to display.

Proposed Solution

In the example, provide an example function similar to
async runCodeInKernel(code: string)=> any;

Thanks,