From 31d626b7d92a65e7c2f965afed4b9deb88345dc9 Mon Sep 17 00:00:00 2001
From: overlookmotel <557937+overlookmotel@users.noreply.github.com>
Date: Tue, 11 Mar 2025 12:02:45 +0000
Subject: [PATCH] perf(transformer/module_runner): use `itoa` to convert `u32`
 to string (#9686)

Follow-on after #9401. Use `itoa` to convert `u32` to string. It's more optimized for this task than `CompactString`.
---
 .../oxc_transformer/src/plugins/module_runner_transform.rs   | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/crates/oxc_transformer/src/plugins/module_runner_transform.rs b/crates/oxc_transformer/src/plugins/module_runner_transform.rs
index a1c6b449c28e2..1a71b0c1487db 100644
--- a/crates/oxc_transformer/src/plugins/module_runner_transform.rs
+++ b/crates/oxc_transformer/src/plugins/module_runner_transform.rs
@@ -44,7 +44,7 @@
 /// another problem: how to transform identifiers which refer to imports? We must collect some information from imports,
 /// but it is already at the end of the visitor. To solve this, we may introduce a new visitor to transform identifiers,
 /// dynamic imports, and import meta.
-use compact_str::ToCompactString;
+use itoa::Buffer as ItoaBuffer;
 use rustc_hash::FxHashMap;
 use std::iter;
 
@@ -639,7 +639,8 @@ impl<'a> ModuleRunnerTransform<'a> {
 
     /// Generate a unique import binding name like `__vite_ssr_import_{uid}__`.
     fn generate_import_binding_name(&mut self, ctx: &TraverseCtx<'a>) -> Atom<'a> {
-        let uid_str = &self.import_uid.to_compact_string();
+        let mut buffer = ItoaBuffer::new();
+        let uid_str = buffer.format(self.import_uid);
         self.import_uid += 1;
         ctx.ast.atom_from_strs_array(["__vite_ssr_import_", uid_str, "__"])
     }