//https://github.com/node-modules/emoji
//http://apps.timwhitlock.info/emoji/tables/unicode


var unified_emoji_ranges = [
  '\ud83c[\udf00-\udfff]', // U+1F300 to U+1F3FF
  '\ud83d[\udc00-\ude4f]', // U+1F400 to U+1F64F
  '\ud83d[\ude80-\udeff]'  // U+1F680 to U+1F6FF
];

var reg = new RegExp(unified_emoji_ranges.join('|'), 'g');
    
console.log("🐬 🐙 🐟 🐠 🐡 🐚 🐌 🐛 🐜 🐝 🐞 🐾".replace(reg, "[表情]"))