refactor: use optional chaining

kwonoj · Sep 23, 2020 · 910ac5b · 910ac5b
1 parent 769a298
commit 910ac5b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/internal/util/lift.ts b/src/internal/util/lift.ts
@@ -7,7 +7,7 @@ import { OperatorFunction, TeardownLogic } from '../types';
  * Used to determine if an object is an Observable with a lift function.
  */
 export function hasLift(source: any): source is { lift: InstanceType<typeof Observable>['lift'] } {
-  return source && typeof source.lift === 'function';
+  return typeof source?.lift === 'function';
 }
 
 /**