this post was submitted on 10 Sep 2023
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CI/CD is useful regardless of which language you’re using. Sooner or later some customer is going to yell at you because you didn’t discover the fatal error before deploying.
CICD isn't an alternative to testing your own work locally. You should always validate your work before committing. But then once you do, the CICD pipeline runs to run the tests on the automation server and kicks off deployments to your dev environment. This shows everyone else that the change is good without everyone having to pull down your changes and validate it themselves. The CICD pipeline also provides operational readiness since a properly set up pipeline can be pointed to a new environment to recreate everything without manual setup. This is essential for timely disaster recovery.
If you're just working on little projects by yourself, it's usually not worth the time. But if you're working in anything approaching enterprise grade software, CICD is a must.
He says as though he's never had two PR merges conflict logically with each other
@Stumblinbear I only worked on small projects so far, that's probably why I don't understand it. But a merge commit is like any other commit and the person pushing this commit has to make sure it works.
When working in teams, merging in two pull requests with seemingly unrelated changes is common practice. If I had to rebase and re-run tests every time another PR got merged in while mine was awaiting reviews, I'd spend most of my time running tests
Did it work? How do you know that? A consumer of your package sends a int when your package expects a string.
What now?
Consumer just needs to write 4x as many unit tests to make up for lack static typing. Hopefully the library author has done the same or you probably shouldn't use that library.
Well... the people fighting against TS are simply not testing things thoroughly. So they are not writing those tests.
Some times that's even perfectly ok. But you don't want to build things over a complex library that has this attitude.
(Except for svelte. It's meaningless for svelte, as TS was always a really bad fit for it.)
It's ok, just do what my company does and write no tests at all!
Hey man it passed the CICD. Not my problem
Theoretically, they'll test and notice that doesn't work and fix their code before they deploy it to production.
Where can you point to other developers evidence that the code in git matches the code you deployed? Deploying locally built packages to prod is an automatically fireable offense because its not auditable
WTF are you talking about? All I'm saying is that if you write code (that in the context of this discussion passes arguments to a method you didn't write, that may not be the type the author of the method expected someone to pass, but really, that's completely beside the point), you should, oh, I don't know, maybe test that it actually works, and maybe even (gasp) write some automated tests so that if anything changes that breaks the expected behavior, the team immediately knows about it and can make appropriate changes to fix it. You don't need a strongly typed language to do any of that. You just need to do your job.
I thought it was clear: they're implying JS is simpler/faster to write and deploy because transpilation is necessary when using TS (unless you use a modern runtime).