emoji is not present in text about quill-emoji HOT 2 OPEN

function toPlaintext(delta: Delta) {
  return delta.reduce(function (text: string, op: any) {
    if (!op.insert)
      throw new TypeError('only `insert` operations can be transformed!');
    if (typeof op.insert !== 'string') {
      if (op.insert?.emoji) {
        return text + `:${op.insert.emoji}:`; // <--- line of interest
      } else if (typeof op.insert !== 'string') {
        return text + ' ';
      }
    }
    // eslint-disable-next-line @typescript-eslint/restrict-plus-operands
    return text + op.insert;
  }, '');
}