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I'm heading a new team of developers working on a software project that makes use of continuous integration (circleci) w/ a pretty fleshed out suite of busterjs unit/integration/acceptance tests. Our project is primarily written w/ coffeescript, and I try to make use of coffeescript-linter to ensure everyone working our code base keeps code consistent and as organized as possible.

My question is, does anyone have any thoughts on when/if/how to enforce linting? Should I integrate linting into my tests that are executed by circleci before deployment?

Another thought I had was writing a simple shell script that combines git-push and the linting utility into one step and then including it in the project & having everyone use it.

I'm pretty new to managing teams of programmers so anyone else's feedback is much appreciated.

EDIT: In the last 3 seconds it just occurred to me that git-hooks is probably perfect for this. Specifically a git-hook on commit.

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When to enforce? Immediately. But I'm not sure you need automated enforcement; code style doesn't affect functionality. Just carry around a big stick, and whack the ones who refuse to comply. –  Robert Harvey Apr 2 '13 at 17:47
    
Yeah I'm debating doing it at all. Don't want to burden my team with trivial requirements & let them focus on more important things like functionality and deadlines. That being said consistency sometimes aids in maintainability & readability between programmers –  Casey Flynn Apr 2 '13 at 17:49
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2 Answers 2

When you a) have a coding standard and b) have configured the linter to be consistent with the coding standard, that's when you start enforcing linting.

Put the linter on the CI server.

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I'd even suggest having a successful lint run as a part of the checkin trigger maybe. Allow for a mechanism for explicitly declaring exceptions though. –  Rob Wells Aug 27 '13 at 9:52
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The question is, how important is it to you that issues found by coffeescript-linter are addressed immediately.

If it is unacceptable to have code in the repository that gets flagged by the linter, then you should have the linter run as a commit hook so it can block the commit if there are issues.

If it is undesirable but not unacceptable, then I would run the linter as part of the test suite (and it it complains, regard that as a test failure)

If it is not practical to run the linter as a test case, then I would run it on the CI server on a separate schedule (for example, once a day or once a week) and encourage developers to use the linter when they have a particularly large commit.

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Totally agree with the first three paragraphs. Not sure about the last one though @Bart. I've seen a lot of technical debt pile up in projects where successful lint runs where required... eventually. Unless a cleanup is regularly enforced, you finish up with a massive stack of "to do's" that people are afraid to touch because their system is currently working "as is". (-: –  Rob Wells Aug 27 '13 at 9:56
    
@RobWells: Of course it is best to integrate the lint with the build, but sometimes it is just not practical. What if every commit kicks of a build, but the build server builds up a backlog due to the duration of build+lint? –  Bart van Ingen Schenau Aug 27 '13 at 16:14
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