text: import request from 'request'
  import url from 'url'
  import style from './style.js'
  
  export function initialStyleUrl() {
    const initialUrl = url.parse(window.location.href, true)
    return (initialUrl.query || {}).style
  }
  
  export function loadStyleUrl(styleUrl, cb) {
    console.log('Loading style', styleUrl)
    request({
      url: styleUrl,
      withCredentials: false,
    }, (error, response, body) => {
        if (!error && response.statusCode == 200) {
          cb(style.ensureStyleValidity(JSON.parse(body)))
        } else {
          console.warn('Could not fetch default style', styleUrl)
          cb(style.emptyStyle)
        }
    })
  }
  
  export function loadJSON(url, defaultValue, cb) {
    request({
      url: url,
      withCredentials: false,
    }, (error, response, body) => {
      if (!error && body && response.statusCode == 200) {
        try {
          cb(JSON.parse(body))
        } catch(err) {
          console.error(err)
          cb(defaultValue)
        }
      } else {
        console.error('Can not load JSON from ' + url)
        cb(defaultValue)
      }
    })
  }
  