emoji.js

var request = require('request');
var cheerio = require('cheerio');
var fs = require('fs');

console.log('retrieving unicode table...');

request.get('http://unicode.org/emoji/charts/full-emoji-list.html', function (err, response, body) {
  console.log('loading data...');

  var $ = cheerio.load(body);

  var emoji = $('td.chars').map(function () {
    return $(this).text();
  }).toArray();

  console.log('writing file...');

  fs.writeFile('./emoji.json', JSON.stringify(emoji, null, 2), function (err) {
    console.log('done');
  });
});