RuntimeError: failed to build frontend bundles

[jasonhuhx]

I ran into the following error when building pip install .

       > node_modules/styled-components/dist/styled-components.browser.esm.js:1:62: error: Could not resolve "react-is" (mark it as external to exclude it from the bundle)
          1 │ ...isValidElementType as n}from"react-is";import r,{useState as o,use...
            ╵                                ~~~~~~~~~~

I was able to resolve it by adding react-is to frontend/package.json

I can create a PR if someone can confirm this is the correct fix.