If I have a library available through packagist that could be used in WordPress plugin or theme development, how should I address multilanguage support if I have a few strings that could be localized?
But my question here is not about opinions on Composer in WordPress development, rather what would be the best practice to localize a library meant for WordPress which is not a plugin or theme. I would avoid making it a plugin, because it's not and it's not meant for end users. But just like many composer packages, as a development tool to be used in other projects.
Is it safe to use gettext wrappers provided by WordPress and meant for WordPress plugins/themes? That would save time but I'm not sure if this would work or create any trouble.