Node: %O (big O) pretty-prints the object

[TooTallNate]

For example:

var o = {
 foo: 'bar',
 b: new Buffer(10),
 c: Math.PI
}

debug('%O', o)

Previously:

 foo { foo: 'bar', b: <Buffer 01 00 00 00 01 00 00 00 c0 82>, c:
3.141592653589793 } +0ms

Now:

 foo { foo: 'bar',
 foo   b: <Buffer 01 00 00 00 01 00 00 00 c0 82>,
 foo   c: 3.141592653589793 } +0ms

This is a breaking change for anybody relying on the old %O behavior.
Though I don't think %O was working previously because the formatters
regexp wasn't checking for uppercase formatters (now fixed in this patch).

[z-vr]

How can I print objects with many layers on one line?

[TooTallNate]

How can I print objects with many layers on one line?

Using lower-case %o formatter.

[z-vr]

@TooTallNate it doesn't do the job though, it prints { func: { result: [ [Object], [Object] ] } } for debug('%o', { func: { result } });

[TooTallNate]

Yes I see. We need a way to configure the depth on a debug instance, and default to something a bit higher than util.inspect()'s default depth value.

[TooTallNate]

^ That should probably be a separate PR though.

[thebigredgeek]

@TooTallNate thinking minor semver for this?

[TooTallNate]

Well considering %O was completely broken before, than ya minor is probably fine. The default behavior of debug(obj) is changing here though so anybody relying on that (for tests, for example) would be failing after an upgrade. So maybe major would be safer in that case.

[thebigredgeek]

@TooTallNate kinda thinking we should expand the API for depth with this release. Set a default value and make the api option for changing depth non-breaking. Thoughts?

[thebigredgeek]

@TooTallNate can you update the docs

[thebigredgeek]

Also @TooTallNate can you add docs for this in the PR as well?

[thebigredgeek]

@TooTallNate any update on docs man? Also, we need to resolve conflicts on this. I'd like to release 2.4 this week

[jfoclpf]

@z-vr you may try this, it fully prints the object, but you lose colours

const util  = require('util');
debug(util.inspect(yourObj, {showHidden: false, depth: null}));