Discussion on: Custom exceptions with JS

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Replies for: Good article! It's easy to just throw error and use catch to handle the exception, but ideally you shouldn't use throw very often as it's a huge dr...

Well I'm using this way in a very massive production project and we don't lose Performance. Do you have a link that supports this or what you say or experience to tell?

danielpdev • Mar 7 '20

try-catch will impact your performance only if you actually throw exceptions.
Examples:

Performance loss when exception is thrown: jsperf.com/try-catch-performance-jls
No performance loss if no exception is thrown: jsperf.com/try-catch-performance-j...

Conclusion:
I'm not saying that you should not use try-catch at all, but like in the examples above actually throwing an exception can be easily avoided.

Damian Cipolat • Mar 7 '20

Nice, thanks for the links provides very useful information. I will be investigating about this.