Warning because sourcemap-codec

[heetrew]

In buble dependence, in magic-string, package sourcemap-codec have this issue: https://github.com/Rich-Harris/sourcemap-codec/issues/73

So, every time I use react-live I have this warning:

Module Warning (from node_modules/source-map-loader/index.js):
(Emitted value instead of an instance of Error) Cannot find SourceMap 'sourcemap-codec.es.js.map': Error: Can't resolve './sourcemap-codec.es.js.map' in 'node_modules/sourcemap-codec/dist'
 @ node_modules/magic-string/dist/magic-string.es.js 1:0-41 173:17-23
 @ node_modules/buble/dist/buble-browser.es.js
 @ node_modules/react-live/dist/react-live.es.js