fetch.jsx

getDataOptions = () => {
  return {
    headers: {
      'User-Agent': 'app',
      'Authorization': `key=${this.state.api_key}`,
    },
    timeout: 5000
  };
}

fetchData = () => {
  this.setState({
    user: null
  });

  fetch(REQUEST_URL, this.getDataOptions())
    .then((response) => response.json())
    .then((responseData) => {
      this.setState({
        user: responseData
      })
    })
    .catch((error) => {
      console.log("Error in fetch");
    })
    .done();
}