This was a simple fix, but something that I had a lot of due to making a baseline template with most of the life cycle functions defined as empty functions. I had a template that was roughly:

class myComponent extends React.Component{
  constructor(props){
    super(props)
  }

  componentWillMount(){
  }

  componentDidMount(){
  }

  componentWillReceiveProps(){
  }

  componentWillUpdate(){
  }

  componentDidUpdate(){
  }

  componentWillUnmount(){
  }

  render(){
    <div>display stuff</div>
  }
}

The fix was to remove the constructor() method. I also removed all the empty functions, leaving me with:

class myComponent extends React.Component{
  render(){
    <div>display stuff</div>
  }
}

In some cases, this led to ES Lint suggesting that I convert to a Stateless Function, instead of a component.