Function nextToken

js/remarkable.js:4315–4325

* Helper functions

(tokens, idx)

 */

function nextToken(tokens, idx) {
  if (++idx >= tokens.length - 2) {
    return idx;
  }
  if ((tokens[idx].type === 'paragraph_open' && tokens[idx].tight) &&
      (tokens[idx + 1].type === 'inline' && tokens[idx + 1].content.length === 0) &&
      (tokens[idx + 2].type === 'paragraph_close' && tokens[idx + 2].tight)) {
    return nextToken(tokens, idx + 2);
  }
  return idx;
}

/**
 * Check to see if `\n` is needed before the next token.