Add proper localStorage availability checks to support Node v25 in @typescript/vfs (#3450)

Co-authored-by: Jake Bailey <[email protected]>

Author: yamcodes

.changeset/famous-pillows-kiss.md

@@ -0,0 +1,5 @@
+---
+"@typescript/vfs": patch
+---
+
+Modify localStorage check to prevent crashes in Node 25

packages/typescript-vfs/src/index.ts

@@ -23,7 +23,7 @@ try {
 } catch (error) { }
 
 const hasProcess = typeof process !== `undefined`
-const shouldDebug = (hasLocalStorage && localStorage!.getItem("DEBUG")) || (hasProcess && process.env.DEBUG)
+const shouldDebug = (hasLocalStorage && typeof localStorage!.getItem === 'function' && localStorage!.getItem("DEBUG")) || (hasProcess && process.env.DEBUG)
 const debugLog = shouldDebug ? console.log : (_message?: any, ..._optionalParams: any[]) => ""
 
 export interface VirtualTypeScriptEnvironment {