The require-dev packages are packages that aren’t necessary for your project to work and shouldn’t be included in the production version of your project.
Typically, these are packages such as phpunit/phpunit that you would only use during development.
How does composer know the it is in a dev evironment and should use require-dev?
Dec 25 ’15 at 19:41
@surfer190 my understanding is that composer doesn’t know; you need to execute composer install or update with the –no-dev option in your live environment to avoid installing the dev packages, but I might be wrong. –
Jan 14 ’16 at 16:23
**Do you even want composer to know? – **
Mar 2 ’16 at 10:44
@surfer190 By default, “dev” dependencies are installed for the package where you’re running composer install (what composer terms the “root package”), but not for other packages installed as dependencies. –
Apr 1 ’16 at 4:27
I think the real question here is “Will having packages in require-dev make Composer complain on composer update|require for packages in require? –
Dec 8 ’16 at 15:35
@JoseB wow thanks, that’s what I needed to know 🙂