old_contents: /**
   * http://jsperf.com/uuid-generator-opt/4 
   *
   */
  
  // Counter being incremented. JS is single-threaded, so it'll Just Work™.
  let __counter = 1;
  
  /**
   * Returns a process-wide unique identifier.
   */
  export default function uuid() {
    return `uid-${__counter++}`;
  }
  
new_contents: // Counter being incremented. JS is single-threaded, so it'll Just Work™.
  let __counter = 1;
  
  /**
   * Returns a process-wide unique identifier.
   */
  export default function uuid() {
    return `uid-${__counter++}`;
  }
  
subject: remove outdated comment from uuid