old_contents: const emojis = require("emoji-unicode-map");
  
  module.exports = Object.keys(emojis.emoji);
  emojis = null;
  
new_contents: const emojis = require("emoji-unicode-map");
  
  module.exports = Object.keys(emojis.emoji);
  // emojis = null;   //removing because throws NPM errors
  
subject: Remove assignment to a constant variable