ReferenceError: require is not defined (create-react-app v2.0)

[sartaj10]

Hi,

I recently upgraded my project to use the create-react-app v2.0 and I'm getting this error

The issue seems to be around the fact that with this update, they have removed support for .mjs extensions as seen below

Here are a couple of links that I found that seem to fix the problem for other packages
facebook/create-react-app#4318
jaredpalmer/razzle@39ea3a6#diff-4fc6a7be00756e3dbc6b0eac82ea10e5R145

NOTE : This worked fine with create-react-app V1.0

[dmt0]

Related: I'm getting the error:

ERROR in ./node_modules/deepcopy/index.mjs
Module not found: Error: Can't resolve './src/index' in '/Users/[...]/webapp/node_modules/deepcopy'```