CurrentTime.js

import React, { Component, createElement } from 'react';

class CurrentTime extends Component {
  state = {
    time: new Date()
  }

  tick = () => {
    this.setState({time: new Date()})
  }

  componentDidMount() {
    this.interval = setInterval(this.tick, 1000);
  }

  componentWillUnmount() {
    clearInterval(this.interval);
  }

  render() {
    const {
      component
    } = this.props;

    return createElement(component, this.state);
  }
}

export default CurrentTime;