The Documentation is wrong for CommonJS

[Frankeo]

Hi,
For CommonJS version you need to put:

const configureStore = require('redux-mock-store').default;

instead of
const { configureStore } = require('redux-mock-store'), also this:
const configureStore = require('redux-mock-store') doesn't work.
the problem is related with the double export statement that you make:
export function configureStore ...
export default configureStore
Regarding of that, it's a great tool for testing!

[JabbyPanda]

The export syntax has been changed, you shall use now with latest version the following export

const { createMockStore }  = require('redux-mock-store')