Reaflow not working because of dependency issue

[Prasy12]

I'm submitting a...

[ ] Bug report 

Current behavior

When I try to use reaflow, it throws an error on the dependency 'calculate-size' module with the following error

Expected behavior

Reaflow should run without this error

Minimal reproduction of the problem with instructions

1.yarn add reaflow
2.Import canvas
3.Add sample Canvas code from storybook and try to visualise the graph

[luanelioliveira]

Just add the GENERATE_SOURCEMAP=false before the start script.

... "scripts": { "start": "GENERATE_SOURCEMAP=false react-scripts start", ... },