refactor: utilize type narrowing (#33075)

PR Close #33075
2019-10-09 17:17:52 +02:00
parent 1ae77da609
commit 6ab5f3648a
29 changed files with 73 additions and 80 deletions
--- a/packages/zone.js/lib/testing/async-testing.ts
+++ b/packages/zone.js/lib/testing/async-testing.ts
@ -26,7 +26,7 @@ Zone.__load_patch('asynctest', (global: any, Zone: ZoneType, api: _ZonePrivate)
        }
        runInTestZone(fn, this, done, (err: any) => {
          if (typeof err === 'string') {
-            return done.fail(new Error(<string>err));
+            return done.fail(new Error(err));
          } else {
            done.fail(err);
          }