Grab datetime from multiple DateTime instances

help
1

I have start_date and end_date pickers

from

https://www.npmjs.com/package/react-datetime

But when trying to pick up currently selected

start_date and end_date

I get

Missing class properties transform.

It was mentioned here

But I am not so sure how to resolve and have another component picking up these two instances of datetime?

client/components/main.jsx:

return (
        <div>
             
            <h3>Start Date</h3>
           <MomentInputDemo/>

            <h3>End Date</h3>
           <MomentInputDemo/>
            
            <FutureTasksForm />

client/components/MomentInputDemo.jsx

export default class MomentInputDemo extends TrackerReact(React.Component) {

constructor() {
    super()
    this.state = {time: ''}
    this.handleChange = this.handleChange.bind(this);
}

handleChange = key => (newDate) => {
    if (newDate !== 'Invalid date') {
        this.setState({
            [key]: newDate / 1000,
        });
    }
 }

render() {
    return '',
        <DateTime
        onChange={this.handleChange}
        />
}

client/components/FutureTaskForm.jsx:

Meteor.call('addTestTicket', text, (error, data)=> {

}

server/entry.jsx:

addTestTicket:
FutureTasks.insert({
        userid: text, //'sec11'
        
        start_date: ParentComponent.handleChange(), <= ??? How to call?
        end_date:  ParentComponent.handleChange() <= ??? How to call?
      });