From e4186ccf2fdd729015900ba718a6ad7b61ea801f Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Tue, 8 Sep 2026 08:16:38 +0000
Subject: [PATCH] perf(cli): optimize string concatenation in migrate command

Replaced the expensive `format!` allocation with sequential `push_str()` and `push()` operations onto the pre-allocated `result` string buffer in the `replace_call` function. This avoids unnecessary heap allocations during string processing loops.

Co-authored-by: Tcode-Motion <188012755+Tcode-Motion@users.noreply.github.com>
---
 cli/src/commands/migrate.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cli/src/commands/migrate.rs b/cli/src/commands/migrate.rs
index 8bbd611d..0d2d85c6 100644
--- a/cli/src/commands/migrate.rs
+++ b/cli/src/commands/migrate.rs
@@ -263,7 +263,9 @@ fn replace_call(source: &str, prefix: &str, keyword: &str) -> String {
                 remaining = &remaining[pos + full.len()..];
                 if let Some(close) = remaining.find(')') {
                     let args = &remaining[..close];
-                    result.push_str(&format!("{keyword} {args}"));
+                    result.push_str(keyword);
+                    result.push(' ');
+                    result.push_str(args);
                     remaining = &remaining[close + 1..];
                 } else {
                     result.push_str(remaining);