Custom stdin/stdout ?

[KaKi87]

Hello,

Is it possible to use seeli with other input/output streams than process.stdin & process.stdout ?

Thanks

[esatterwhite]

It depends on what you want to do I suppose. Admittedly, it was not something that I built for in the early days.

Right now, if you want to sent output to something other than stdout you would have to handle this in a command. If your command returns something other than a string, seeli will not try to write it to stdout. The the entirety of that logic is here

node-seeli/lib/seeli.js

Lines 89 to 100 in a9d7caf

	return this.get('help')
	.run(cmd)
	.then(onComplete.bind(this))
	.catch(onError.bind(this))
	}
	if (this.has(cmd)) {
	return this.get(cmd)
	.run(parsed.argv.remain.length ? parsed.argv.remain[0] : null)
	.then(onComplete.bind(this))
	.catch(onError.bind(this))
	}

Instead it will be handed to a content handler in which you can do something custom with your data

new Command({
  onContent: function(content) {
    process.stderr.write(content.foo)
  }
, run: async function(flags) {
    return {foo: 'hello world'}
  }
})

Its not impossible to change some of the internals of Command to take an arbitrary stream object. Currently, It isn't possible to pipe directly to a seeli command that I can think of.

cat 'hello world' | mycmd caps
$ HELLO WORLD

It should be - I agree.

If you have ideas, want to hash it out, or want to make an attempt at it, more than happy to help.

[esatterwhite]

Another problem that I would like to fix, is the internal ui object is an ora instance which has its own streams. This is a problem in testing and is kind of clunky to work around. I would also like to fix that and/or make it easier to turn that off

node-seeli/lib/command/index.js

Lines 170 to 175 in a9d7caf

	this.ui = ora({
	color: conf.get('color')
	, spinner: this.options.ui
	, text: 'loading'
	, stream: process.stdout
	})

[KaKi87]

I see, in the end I can just print wherever I want manually inside onContent or run as long as I don't use this.ui.

I guess I didn't take enough time to read the example code on the README, as I've been struggling with many CLI frameworks on that issue already and lost my patience, sorry.

Thanks

[esatterwhite]

the internal Command is a class which you can sub class and bend to your will for the most part. if examples would help, I can dig some up

as long as it has run function that returns a promise - anything is fair game really.