packages/then-pug/lib/pug-code-gen-module.js
function(comment){
    var ast = [];
    if (!comment.buffer) return;
    if (this.pp) push.apply(ast, this.prettyIndent(1, true));
    push.apply(ast, this.buffer('<!--' + comment.val + '-->'));
    return ast;
  }
function(comment){
    var ast = [];
    if (!comment.buffer) return;
    if (this.pp) push.apply(ast, this.prettyIndent(1, true));
    push.apply(ast, this.buffer('<!--' + comment.val + '-->'));
    return ast;
  }
function ( comment ) { var ast = [ ] ; if ( ! comment . buffer ) return ; if ( this . pp ) push . apply ( ast , this . prettyIndent ( 1 , true ) ) ; push . apply ( ast , this . buffer ( '<!--' + comment . val + '-->' ) ) ; return ast ; }
Visit a `comment`, only buffering when the buffer flag is set.

@param {Comment} comment
@api public
Visit a comment only buffering when the buffer flag is set .