how to debug wasm

[fengzikuaipao]

Hi，I am trying to add a UI plugin for my business and it is necessary to modify trace_processor to support user-defined data；So，I try to debug trace_processor.wasm file in Chrome browser by DevTools, but after add --debug option in run-dev-server script and re-run it，the output trace_processor.wasm.map is empty and the brower cannot recognize it either.
The run-dev-server is modified to the following:

• $UI_DIR/node $UI_DIR/build.js --serve --watch --debug "$@"

The content of trace_processor.wasm.map is:
{"version":3,"sources":[],"names":[],"mappings":""}

Is debugging wasm files through a browser a suitable way?
What method do you usually use for debugging during development？
Why is the content in the wasm.map file empty？