Function printLeadingComment

lib/comments.ts:266–298

(commentPath: any, print: any)

}

function printLeadingComment(commentPath: any, print: any) {
  const comment = commentPath.getValue();
  n.Comment.assert(comment);

  const loc = comment.loc;
  const lines = loc && loc.lines;
  const parts = [print(commentPath)];

  if (comment.trailing) {
    // When we print trailing comments as leading comments, we don't
    // want to bring any trailing spaces along.
    parts.push("\n");
  } else if (lines instanceof Lines) {
    const trailingSpace = lines.slice(
      loc.end,
      lines.skipSpaces(loc.end) || lines.lastPos(),
    );

    if (trailingSpace.length === 1) {
      // If the trailing space contains no newlines, then we want to
      // preserve it exactly as we found it.
      parts.push(trailingSpace);
    } else {
      // If the trailing space contains newlines, then replace it
      // with just that many newlines, with all other spaces removed.
      parts.push(new Array(trailingSpace.length).join("\n"));
    }
  } else {
    parts.push("\n");
  }

  return concat(parts);
}

function printTrailingComment(commentPath: any, print: any) {
  const comment = commentPath.getValue(commentPath);