ReactAotoBind.js

//Util.js
export function reactBind(data,that){
    return data.forEach((fn) => that[fn] = that[fn].bind(that));
}

//myNewComponet.jsx
import reactBind from './Util.js';

class myNewComponet extends React.Component{
  constructor(props) {
    super(props);
    // Not this 
    //this.onChange = this.onChange.bind(this);
    
    reactBind(['onChange','onItemClick','onListClick'], this); // OK
  }
  
  /*
  rest code
  */
}