Parcel: Proposal: console.clear() on HMR

[FDiskas]

IT would be nice if console.clear() command would be executed on each HMR

What you think?

[davidnagli]

👍

[ThaddeusJiang]

👍

[ameerthehacker]

Hi @davidnagli shall I take up the issue

[ameerthehacker]

@DeMoorJasper What does HMR means and which file or module should I start looking for improvement?

[DeMoorJasper]

@ameerthehacker HMR is Hot Module reload, it's the thing that refreshes the page content in the browser when saving a file.
Related file: https://github.com/parcel-bundler/parcel/blob/master/src/builtins/hmr-runtime.js

[ameerthehacker]

@DeMoorJasper thanks for the guidance I have made a pull request for this issue, do check it out and let me know if any improvement is needed from my side.

[devongovett]

This will clear console output that the user's app posted, not things parcel posted. I don't necessarily think we should be clearing messages we don't own. People will definitely complain about this.

[ameerthehacker]

@devongovett then how can we differntiate between parcels messages and others messages. I think of a way like whenever something is logged in from console I will add it to an array with flag whether it was added by parcel and will clear the messages based on the flag.

[devongovett]

Fixed by #1073

[FDiskas]

Thank you

[justin-calleja]

Is there a way to disable this?

(it clears any console.log I might make in an express server using parcel as a middleware).

[mischnic]

(it clears any console.log I might make in an express server using parcel as a middleware).

This is about the client (browser) side (after reading https://github.com/parcel-bundler/parcel/issues/355#issuecomment-480297826)

[JakubKoralewski]

can you disable clearing the console? I load a file inside the webpage and then on each HMR I have to either re-add the file or create a special button for development to press every HMR cycle :/

a simple solution is to just:

delete console.clear

but that in turn gives you:

Uncaught TypeError: console.clear is not a function
    at WebSocket.ws.onmessage

on each HMR.

[FDiskas]

I'm not agree. This your special case. I suggest you to not use hmr

[JakubKoralewski]

I get what you're saying! I totally agree that the whole behavior shouldn't be changed for this special case, I was only thinking about an option to disable the clearing as a command line argument or something, like parcel index.html --no-console-clear.

[FDiskas]

Or something like --verbose