content: import ErrorStore from '../stores/ErrorStore'
  import React from 'react'
  import Spinner from './Spinner'
  
  export default class ErrorPage extends React.Component {
  
    constructor() {
      super()
      this.state = ErrorStore.getState()
  
      this._onChange = () => {
        this.setState(ErrorStore.getState())
      }
    }
  
    componentDidMount() {
      ErrorStore.listen(this._onChange)
    }
  
    componentWillUnmount() {
      ErrorStore.unlisten(this._onChange)
    }
  
    render() {
      return <div className="page">
  
        <Spinner dir="up" />
  
        <h1 className="with-subtitle">FilePizza</h1>
        <p className="subtitle">
          <strong>{this.state.status}:</strong> {this.state.message}
        </p>
  
        {this.state.stack
          ? <pre>{this.state.stack}</pre>
          : null}
  
      </div>
    }
  
  }
  