Is this a bug report?

Yes

Can you also reproduce the problem with npm 4.x?

Yes

Environment

All environments

Steps to Reproduce

1. yarn add graphql@0.13.2 @types/graphql

2. Add the following code to App.tsx:

    import { graphql } from 'graphql'
    console.log(graphql)
   

3. yarn test -t 'renders without crashing'

Expected Behavior

Test should pass

Actual Behavior

 FAIL  src/App.test.tsx
  ● Test suite failed to run

    /Users/mbrowne/_temp/test-app/node_modules/graphql/index.mjs:2
    export { graphql, graphqlSync } from './graphql';
    ^^^^^^

    SyntaxError: Unexpected token export

Solution

This is a known bug in create-react-app. The fix should be simple: simply merge this PR into this repo (it was already merged into the official create-react-app).