public static void Apply(TextWriter writer, JsAstNode node, JsSettings settings)
{
if (node != null)
{
var outputVisitor = new JsOutputVisitor(writer, settings);
node.Accept(outputVisitor);
// if there is a symbol map that we are tracking, tell it that we have ended an output run
// and pass it offsets to the last line and column positions.
settings.IfNotNull(s => s.SymbolsMap.IfNotNull(m => m.EndOutputRun(outputVisitor.m_lineCount, outputVisitor.m_lineLength)));
}
}