Comments (11)
molily
commented on September 18, 2024
Don’t know how important the line context is. If mediator.debug would be a function instead, we could make the whole debugging PubSub based like someone proposed before. Of course, the direct line context would get lost when using console.log/debug/etc. in a separate logging module.
My concern is that I don’t want to see all debug messages the whole time. In a bigger app, that would be hundres of messages in my console while I’m just interesting in the module I’m currently working on. My personal workflow is to uncomment the console.debug calls in the module/functions I’m currently interested in. So uncommenting all console.debug and making them depend on one flag alone would render the idea pretty useless for me.
That’s why I would favor a PubSub logging approach which allows at least to enable debug messages per module or per type. I don’t have a clear idea of that yet, but someone here said that there’s a similar mechanism in node.js? See also http://www.paperplanes.de/2012/3/14/on-notifications-logsubscribers-and-bringing-sanity-to-rails-logging.html for Rails' approach.
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paulmillr
commented on September 18, 2024
The line context is pretty important in my opinion (using it all the time, clicking on lines & adding debug breakpoints somewhere), but I agree with you that seeing all messages is a pain.
How about commenting-out console.debug-s with triple ### to make it persisted in JS files?
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Rendez
commented on September 18, 2024
If there's to be a debug mode as a config flag, I rather wrap all model, collection, controllers and views' methods on initialize() with console.debug calls containing arguments. Consider this a decorator pattern.
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paulmillr
commented on September 18, 2024
@Rendez i like the idea. wouldn't it be too slow though?
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molily
commented on September 18, 2024
@paulmillr What’s the benefit of having commented-out console.debug calls in the compiled JS?
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paulmillr
commented on September 18, 2024
@molily if chaplin will be distributed as a separate one-file library, it will allow to debug things more easily.
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molily
commented on September 18, 2024
I see. Good idea, will implement that.
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karellm
commented on September 18, 2024
I actually don't see this as necessary. I'd like to discuss the two options below first and see what you think.
Option 1
If you want to debug your code, use breakpoints and chrome live editing (you can add a console.log to the code). From experience, when I need to log thing, it is almost always specific to the bug I'm working on. Meaning that I'll need anyway to add my own console.log(). Plus, if console.log() are meant to reproduce the stacktrace, why not using the stacktrace for debugging?
Option 2
I like @Rendez solution better (but I wouldn't use it). We could use a debug() function like that:
debug = (message, namespaces) ->
if config.debug == true
console.log message
else if _(namespaces).include? config.debug
console.log message
else
returnAs you can see config.debug can take 3 values:
true: display allfalse: display nothingstring: a namespace to match against
Then in the code you can have:
debug("This is a debug message", "controller#action")
Which would be displayed only if config.debug is set to controller#action.
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paulmillr
commented on September 18, 2024
@karellm I use breakpoints constantly but this is very different from logging. Sometimes it's hard to even know where to put a breakpoint and a quick look on console.log statements shows the place instantly.
Again, non-browser debug() would not preserve line numbers. I'm not sure if this will fuck up debug process in apps where you have one app.js file generated from everything, but i'm open to test the workflow / pull reqs.
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karellm
commented on September 18, 2024
What do you mean by it would not preserve line numbers?
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paulmillr
commented on September 18, 2024
this
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Page</title>
</head>
<body>
<script>
var debug = function(message) {
console.log(message)
};
debug(1);
debug(2);
debug('shit');
</script>
</body>
</html>from chaplin.
Related Issues (20)
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