async.js

import React from 'react'

class AsyncAwait extends React.Component {
  constructor() {
    super()
    this.state = {}
  }

  async componentDidMount() {
    const res = await this.context.api.fetch('/logout', { method: 'POST' }).then(() => {
      this.context.api.environment.getStore().getSource().clear();
      this.context.router.push(location.pathname);
    });
     const { ip } = await res.json()
     await this.setStateAsync({ ipAddress: ip })
  }

  setStateAsync(state) {
    return new Promise((resolve) => {
      this.setState(state, resolve)
    })
  }

  render() {
    return (
      <div
        My IP is {this.state.ipAddress || 'Unknown'}
      </div>
    )
  }
}

export default AsyncAwait