old_contents: const config = {
    baseURL: null,
  }
  
  const configure = (options) => {
    if (options.baseURL && !/\/$/.test(options.baseURL)) {
      options.baseURL += '/'
    }
  
    config = {
      ...config,
      options
    }
  }
  
  
  export default configure
  
  export {
    config,
  }
  
new_contents: let config = {
    baseURL: null,
  }
  
  const configure = (options) => {
    if (options.baseURL && !/\/$/.test(options.baseURL)) {
      options.baseURL += '/'
    }
  
    config = {
      ...config,
      options
    }
  }
  
  
  export default configure
  
  export {
    config,
  }
  
subject: fix rewritable config