A few devops ideas.

[ariporad]

Hi All,

Over the past few days, I've been doing a bit of work on AVA, and I had a few ideas to improve the developer experience, and I wanted to get some feedback on them:

1. babel.js is really poorly named. (Personal pet-peeve).
2. It would be nice if there was a way to run tests without coverage, something like npm run test-fast. Tests are way faster without coverage.
3. A watch mode would be nice too.

Thoughts?

[sindresorhus]

1. Any suggestions for what it should be named?
2. Yeah, let's just do that by default and put the coverage in a separate run script and update .travis.yml
3. Watch support #70

[jamestalmage]

1. 👍
2. The penalty for coverage is about to drop from 17 seconds to 3 seconds Caching 2.0 istanbuljs/nyc#108. I don't think that is necessarily worth maintaining an additional build path.
3. Watch support #70 is adding the feature to AVA, I think @ariporad means he wants a good way to use a file watch while hacking on AVA. That would be a tap feature request.

More on 2:

Even without coverage: 20-25 seconds is still a really long time to wait for a failure.

Really the best thing to do is learn the tap cli. I definitely did not fully understand it when I started hacking on AVA, and I think I even proposed something similar to your ideas here at some point. I (like @ariporad I believe) was most accustomed to testing in mocha, so there was a definite learning curve.

When I am hacking on a particular AVA problem, and want to focus on a particular file (let's just say fork.js), this is the command I use:

tap -b test/fork.js

The -b is short for --bail-out, which makes tap exit as soon as it sees a single failure. Usually that is enough to quickly identify a problem you can fix and move on.

[ariporad]

@jamestalmage, Thanks, thats a good tip to know! But I still think that we don't need to run coverage by default. And I did mean watch for AVA itself. I was just thinking nodemon as a dev dependency.

@sindresorhus: child.js?

Can I go ahead and implement #70? It seems no one has done so.

[sindresorhus]

child.js?

👍

Can I go ahead and implement #70? It seems no one has done so.

I'm not sure I want to deal with that right now. We have enough Babel related overhead and issues. Watching comes with its own headaches. The watch functionality in Node.js core is unreliable and the various watcher libs have edge-cases and downsides, like requiring native addons, which is a no go for us. We've added a lot of features lately, and while I realize it's more fun adding features than fixing bugs, I think we should prioritize the latter right now. My top priority is stabilizing the core and APIs, fixing bugs, and improving performance.

[ariporad]

@sindresorhus: Ok.

[ariporad]

Oh, @sindresorhus: Should I implement a coverage-less test option and a npm run watch too?

[sindresorhus]

Should I implement a coverage-less test option

Actually, we already have test-win for that. We could just rename it into something more generic. (and update appveyor.yml)

npm run watch too?

👍 from me. @jamestalmage ?

[ariporad]

@sindresorhus: How does test sound, and we can rename the test with coverage test:cov?

[jamestalmage]

What did you have in mind for a watch script?

[sindresorhus]

@jamestalmage Do you have any preference on having coverage by default when running npm test? I never use it personally so wouldn't mind moving it into test:cov, but don't have any strong opinion about it.

[jamestalmage]

Well, when I have 100% coverage - yeah, I like having it there so I know when I'm introducing new code that isn't covered. Since we are so far off complete coverage, it's really hard to see exactly where you are dropping coverage, I guess we could turn it off.

[ariporad]

@sindresorhus: I have one more larger idea, which I'm not sure if you've ever considered: What about adopting the Angular commit message guidelines? They make it really easy to see what a commit is about, and it allows you to do cool things, like semantic-release (which could be really helpful for some of your smaller projects). I use them for all my projects, and it's really nice. (I'm sure you've probably seen it, but I thought I'd suggest it. If for whatever reason you don't want to implement it, that's 110% fine).