toEmoji.js

const toEmoji = (num) => {
  if (num === null || num === undefined || Number.isNaN(num)) return '⛔';
  if (num === 10) return '🔟';
  if (!isFinite(num)) return '🔁';
  
  return String(num)
    .replace('-', '−')
    .replace('.', '⏺️')
    .replace(/\d/g, digit => `${digit}️⃣`)
    .replace(/⏺️(\d{0,2})\d*/, (match, p1) => `⏺️${p1}`);
};

// Examples
// console.log(toEmoji(-1)); // '−1️⃣'
// console.log(toEmoji(Infinity)); // '🔁'
// console.log(toEmoji(10)); // '🔟'
// console.log(toEmoji(0)); // '0️⃣'
// console.log(toEmoji(3.14159)); // '3️⃣⏺️14'
// console.log(toEmoji(NaN)); // '⛔'