function getCommentLineNums(comments) {
	const lines = [];

	comments.forEach(token => {
		const start = token.loc.start.line;
		const end = token.loc.end.line;

		lines.push(start, end);
	});
	return lines;
}
Return an array with any line numbers that contain comments.
@param {Array} comments An array of comment tokens.
@returns {Array} An array of line numbers.