From e277490c821d20280137ca54eede8502caf62bbd Mon Sep 17 00:00:00 2001
From: David Sherret <dsherret@users.noreply.github.com>
Date: Sun, 14 Apr 2024 17:15:17 -0400
Subject: perf: do not clone swc `Program` when transpiling (#23365)

---
 runtime/shared.rs | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

(limited to 'runtime/shared.rs')

diff --git a/runtime/shared.rs b/runtime/shared.rs
index c5ea2fedd..e18b0b93c 100644
--- a/runtime/shared.rs
+++ b/runtime/shared.rs
@@ -95,20 +95,22 @@ pub fn maybe_transpile_source(
     scope_analysis: false,
     maybe_syntax: None,
   })?;
-  let transpiled_source = parsed.transpile(
-    &deno_ast::TranspileOptions {
-      imports_not_used_as_values: deno_ast::ImportsNotUsedAsValues::Remove,
-      ..Default::default()
-    },
-    &deno_ast::EmitOptions {
-      source_map: if cfg!(debug_assertions) {
-        SourceMapOption::Separate
-      } else {
-        SourceMapOption::None
+  let transpiled_source = parsed
+    .transpile_owned(
+      &deno_ast::TranspileOptions {
+        imports_not_used_as_values: deno_ast::ImportsNotUsedAsValues::Remove,
+        ..Default::default()
       },
-      ..Default::default()
-    },
-  )?;
+      &deno_ast::EmitOptions {
+        source_map: if cfg!(debug_assertions) {
+          SourceMapOption::Separate
+        } else {
+          SourceMapOption::None
+        },
+        ..Default::default()
+      },
+    )
+    .unwrap()?;
 
   let maybe_source_map: Option<SourceMapData> = transpiled_source
     .source_map
-- 
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