code: function isReplaceable(node, prevNode) {
    if (node.type == 'comment') {
      return false;
    }
  
    if (prevNode && prevNode.type == 'comment') {
      return RE_REPLACE.test(prevNode.comment);
    }
  
    return false;
  }
docs: Return whether the given `node` is replaceable.
  
  @param {Object} node
  @param {Object} prevNode used for @replace detection
  @returns {Boolean}