Fix panic when tokenAtPosition is nil in onTypeFormatting

Co-authored-by: jakebailey <[email protected]>

Author: Copilot

internal/ls/format.go

@@ -140,6 +140,9 @@ func getRangeOfEnclosingComment(
 	precedingToken *ast.Node,
 	tokenAtPosition *ast.Node,
 ) *ast.CommentRange {
+	if tokenAtPosition == nil {
+		return nil
+	}
 	jsdoc := ast.FindAncestor(tokenAtPosition, (*ast.Node).IsJSDoc)
 	if jsdoc != nil {
 		tokenAtPosition = jsdoc.Parent

internal/ls/utilities.go

@@ -182,6 +182,9 @@ func isExportSpecifierAlias(referenceLocation *ast.Identifier, exportSpecifier *
 }
 
 func isInComment(file *ast.SourceFile, position int, tokenAtPosition *ast.Node) *ast.CommentRange {
+	if tokenAtPosition == nil {
+		tokenAtPosition = astnav.GetTokenAtPosition(file, position)
+	}
 	return getRangeOfEnclosingComment(file, position, astnav.FindPrecedingToken(file, position), tokenAtPosition)
 }