NodeJ中的注释会影响性能吗？

Question

I am in the process of having to refactor an entire NodeJs project which is quite large. One of the biggest problems I'm facing is that my predecessor included literally no documentation.

I'm used to clientside js, where comments can be stripped via uglify (or similar) before deploying to a production environment.

Is there something similar for node, or how do people handle this? Is the performance impact of comments negligible?

Answer 1

Comments do not affect code performance in a significant way. Neither in the in client nor in the server.

What happens in the client is that if you're including JavaScript with comments those lines are still being downloaded by the browser, without no extra benefit for the user.

Answer 2

In client side code, comments add to the file size that needs to be sent to the browser, so that is why tools at used to remove comments. On the other hand, the comments in server side code doesn't make much difference.

Answer 3

Comments do not affect performance in a significant matter. How I understand it, the javascript program is being loaded into the memory. In this process the comments are being ignored and are not loaded into the memory. Meaning that only during the loading of your application you could experience extremely minor increase of loading time while having a lot of comments. But this is negligible.

Using uglify would not be necessary since users cannot read your NodeJS code. And it would make the newly refactored code less readable for you (which would be counterproductive).

Like Alberto and Konst are pointing out is that uglify can be used to reduce file size for downloading by the client.

Note: I do not know if i am exactly correct, please do correct me if i am wrong.