[uncontrolled] onBeforeChange's third parameter always null

[euZebe]

value parameter seems to always be null in onBeforeChange(editor,_ data, value, next) for an uncontrolled codemirror ; did I miss something ?

import React, { Component } from 'react';
import { UnControlled as CodeMirror } from 'react-codemirror2';

class App extends Component {
  handleBeforeChange = (editor, data, value, next) => {
    console.log('handleBeforeChange', value); // gets null
    next();
  };
  handleChange = (editor, data, value) => {
    console.log('handleChange', value);  // gets the field value
  };
  render() {
    return (
      <div className="App">
        <CodeMirror
          onChange={this.handleChange}
          onBeforeChange={this.handleBeforeChange}
        />
      </div>
    );
  }
}
export default App;

[scniro]

Yikes, it is always null here. I admittedly can not recall at this moment why this is, but I believe it's because we don't actually need the value because we're not managing state. Regardless, the inconsistency remains. I'll likely add value to the cb since an explicit null isn't all that helpful. Thanks for bringing this up 👍

[scniro]

@euZebe Fixed with the 4.0.1 release. Note that value in this callback is actually the old value since we're getting it before a change (in the case of uncontrolled)