From f3b21a2033206e585b2b7b18622104f09eb87f2e Mon Sep 17 00:00:00 2001
From: TypeScript Bot <ts_bot@rcavanaugh.com>
Date: Wed, 19 Jun 2024 14:35:58 -0700
Subject: [PATCH] =?UTF-8?q?=F0=9F=A4=96=20Pick=20PR=20#58931=20(Defer=20cr?=
 =?UTF-8?q?eation=20of=20barebonesLibSourc...)=20into=20release-5.5=20(#58?=
 =?UTF-8?q?933)?=
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Co-authored-by: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
---
 src/services/transpile.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/services/transpile.ts b/src/services/transpile.ts
index ccf8396247c..86622ea3e35 100644
--- a/src/services/transpile.ts
+++ b/src/services/transpile.ts
@@ -26,6 +26,7 @@ import {
     optionDeclarations,
     parseCustomTypeOption,
     ScriptTarget,
+    SourceFile,
     toPath,
     transpileOptionValueCompilerOptions,
 } from "./_namespaces/ts.js";
@@ -109,9 +110,11 @@ interface Symbol {
     readonly [Symbol.toStringTag]: string;
 }`;
 const barebonesLibName = "lib.d.ts";
-const barebonesLibSourceFile = createSourceFile(barebonesLibName, barebonesLibContent, { languageVersion: ScriptTarget.Latest });
+let barebonesLibSourceFile: SourceFile | undefined;
 
 function transpileWorker(input: string, transpileOptions: TranspileOptions, declaration?: boolean): TranspileOutput {
+    barebonesLibSourceFile ??= createSourceFile(barebonesLibName, barebonesLibContent, { languageVersion: ScriptTarget.Latest });
+
     const diagnostics: Diagnostic[] = [];
 
     const options: CompilerOptions = transpileOptions.compilerOptions ? fixupCompilerOptions(transpileOptions.compilerOptions, diagnostics) : {};