Using debouncer with React event

Question

I have an onchange event for a field that needs to be debounced, I'm using underscore for that, however when I use the debouncer the event that is passed to the React handler appears to be out of date.

<div className='input-field'>
  <input onChange={_.debounce(this.uriChangeHandler.bind(this), 500)} id='source_uri' type='text' name='source_uri' autofocus required />
  <label htmlFor='source_uri'>Website Link</label>
</div>

uriChangeHandler(event) {
    event.preventDefault();
    let uriField = $(event.target);
    let uri = uriField.val();
    this.setState({
        itemCreateError: null,
        loading: true
    });
    this.loadUriMetaData(uri, uriField);
}

I'm getting this error:

Warning: This synthetic event is reused for performance reasons. If you're seeing this, you're calling preventDefault on a released/nullified synthetic event. This is a no-op. See https‍://fb‍.me/react-event-pooling for more information.

Using the onchange without the debouncer works fine.

Answer 1

I ended up with a solution I saw on github which worked well for me. Basically you wrap the debounce function in a custom function debounceEventHandler which will persist the event before returning the debounced function.

function debounceEventHandler(...args) {
  const debounced = _.debounce(...args)
  return function(e) {
    e.persist()
    return debounced(e)
  }
}

<Input onChange={debounceEventHandler(this.handleInputChange, 150)}/>

This got rid of the synthetic event warning