Material-ui-pickers: Warning: React.createElement: type is invalid -- expected a string

[semiautomatix]

Environment

| Tech | Version |
|---------------------|---------|
| material-ui-pickers | ^1.0.0-beta.14 |
| material-ui | ^1.0.0-beta.32 |
| React | 15.6.1 |
| Browser | Chrome 63.0.3239.132, FireFox 58.0.1 |
| Platform | Windows 10 |

warning.js:35 Warning: React.createElement: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in. Check the render method of ModalWrapper.

Steps to reproduce

1. Use default example

Expected behavior

To display correctly

Actual behavior

Error is produced

[semiautomatix]

            <DatePicker
              value={new Date()}
              onChange={() => {}}
            /> 

[semiautomatix]

CodeSandbox: https://codesandbox.io/s/y233z8l32j

[mono424]

+1

[djhi]

That's because react 16.2.0 is required: the library uses Fragment

[semiautomatix]

Thanks for the response - perhaps this could be highlighted as a "breaking change". Unfortunately I may not be able to upgrade React just yet - so this might be a show stopper.

[cherniavskii]

@semiautomatix it is highlighted as a breaking change - see https://github.com/dmtrKovalenko/material-ui-pickers/releases/tag/v1.0.0-beta.11

[semiautomatix]

@cherniavskii My apologies, my searches did not bring this change to my attention - hopefully this thread will point others to the solution.