@@ -115,7 +115,7 @@ export function initNgDevMode(): boolean {
     if (typeof ngDevMode !== 'object') {
       ngDevModeResetPerfCounters();
     }
-    return !!ngDevMode;
+    return typeof ngDevMode !== 'undefined' && !!ngDevMode;
   }
   return false;
 }
Original file line number	Diff line number	Diff line change
`@@ -115,7 +115,7 @@ export function initNgDevMode(): boolean {`
`115`	`115`	`if (typeof ngDevMode !== 'object') {`
`116`	`116`	`ngDevModeResetPerfCounters();`
`117`	`117`	`}`
`118`		`- return !!ngDevMode;`
	`118`	`+ return typeof ngDevMode !== 'undefined' && !!ngDevMode;`
`119`	`119`	`}`
`120`	`120`	`return false;`
`121`	`121`	`}`