old_contents: #!/usr/bin/env node
  'use strict';
  
  let lib = require('../lib/index.js');
  
  let randomData = lib.getRandomData();
  
  // setInterval(randomData, 500);
  randomData();
  
new_contents: #!/usr/bin/env node
  'use strict';
  
  let lib = require('../lib/index.js');
  
  let getRandomData = lib.getRandomData;
  
  setInterval(lib.getRandomData, 500);
  // randomData();
  
subject: fix requires