@marko/prettyprint/dist/printHtmlComment.js

Prettyprint Marko template files in the syntax of your choice

"use strict";

var indentCommentLines = require("./util/indent").indentCommentLines;

module.exports = function printHtmlComment(node, printContext, writer) {
  var comment = node.comment.value;

  if (printContext.preserveWhitespace === true) {
    writer.write("<!--" + comment + "-->");
    return;
  }

  var currentIndentString = printContext.currentIndentString;

  if (printContext.isHtmlSyntax && printContext.depth !== 0) {
    writer.write("<!--" + comment + "-->");
  } else {
    var lines = comment.split(/\r\n|\n/);

    if (lines.length === 1) {
      if (printContext.isConciseSyntax) {
        writer.write(currentIndentString + "// " + comment.trim());
      } else {
        writer.write(currentIndentString + "<!-- " + comment.trim() + " -->");
      }
    } else {
      var indentedLines = indentCommentLines(lines, printContext);
      writer.write(currentIndentString + "<!--" + printContext.eol + indentedLines.join(printContext.eol) + printContext.eol + currentIndentString + "-->");
    }
  }
};