How can I turn off ZoneAwareError in Angular?

Question

I want to turn off ZoneAwareError in Angular for the performance issue.

I try to find a solution at the Documents, but I couldn't find it.

Are there other APIs to solve this problem?

Do you have evidences that ZoneAwareError is causing performance issues? Maybe it adds few lines of code for every Error, but we are still in the case of [micro-optimization](https://en.wiktionary.org/wiki/micro-optimization). By the way, you can try `zone.runOutsideAngular()` — Christian Vincenzo Traina, Jul 29 '19 at 10:05
PS. In your example you're showing that the processor spends a lot of time inside a ZoneAwareError, but it doesn't say that using a plain Error it would be better! Errors (as much as Exceptions in other programming languages) are always expensive — Christian Vincenzo Traina, Jul 29 '19 at 10:06
PS. (again): Are you using Errors and try/catch inside a loop? This is a known bad practice — Christian Vincenzo Traina, Jul 29 '19 at 10:08
@CristianTraìna I just called Promise.reject that time. When I didn't catch, Chrome show `Uncaught (in promise) [object Object]: ` Error. — egaoneko, Jul 29 '19 at 11:24
@CristianTraìna This processor is not in angular and it called and initialized before angular. — egaoneko, Jul 29 '19 at 11:45

score 0 · Accepted Answer · answered Jul 30 '19 at 01:54

I solved it by refactoring catch logic like under code.

As Is.

const promise = new Promise(() => {});
promise.catch(() => {});
promise.then(() => {});

To Be.

let promise = new Promise(() => {});
promise = promise.catch(() => {});
promise.then(() => {});

1 Answers1