ESM build causes previously passing Jest tests to fail

[Byron-Wall]

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• [x ] Bug
• [x ] Feature Request
• [ ] Question

Problem Report

Please describe the problem here. Previously passing jest tests fail with the output:

Details:

node_modules/react-resizable/node_modules/react-draggable/build/Draggable.js:56
            prevPropsPosition: { ...position
                                 ^^^

    SyntaxError: Unexpected token ...

System Info

Node Version: 6.14.4 Browser: JSDOM OS: X

Reproduction

Run a jest test on a component that imports react-resizable

#######FIX############ the fix is: add react-resizable to the projects' jest config's transformIgnorePatterns, like so:

    "transformIgnorePatterns": [
      "<rootDir>/node_modules/(?!react-resizable)"
    ],

[Byron-Wall]

I'd guess the feature request is really a docs PR, which I can do later if needed

[eric-burel]

It does not seem to break only Jest but also breaks one of my older Electron app Am I expected to update something in my app for this to work? Maybe the Babel version?

Edit: finally got it by locking react-resizable to 1.8 explictely, when using react-grid-layout. Some older app won't be happy with the Babel 7 update, so they need to use this version before they update Babel themselves.