From 1f82f368b668585fd94bc0fd4512d90c438c2bbb Mon Sep 17 00:00:00 2001
From: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
Date: Tue, 27 Oct 2026 16:18:00 +0000
Subject: [PATCH] Only pre-size the printer buffer when printing a whole file
 (#64972)

---
 tsc/internal/printer/printer.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tsc/internal/printer/printer.go b/tsc/internal/printer/printer.go
index a27452d5147..46bb47c25eb 100644
--- a/tsc/internal/printer/printer.go
+++ b/tsc/internal/printer/printer.go
@@ -5095,7 +5095,7 @@ func (p *Printer) Write(node *ast.Node, sourceFile *ast.SourceFile, writer EmitT
 	}
 	p.writer = writer
 	p.writer.Clear()
-	if sourceFile != nil {
+	if sourceFile != nil && node == sourceFile.AsNode() {
 		if grower, ok := p.writer.(interface{ Grow(n int) }); ok {
 			grower.Grow(len(sourceFile.Text()))
 		}