> What language has a built in dependency system…? Literally every language with support for modules that extend across files has some form of dependency manag

> What language has a built in dependency system…? Literally every language with support for modules that extend across files has some form of dependency management. Even C -- simple as it is -- has headers and source files which separate interface from implementation. Some languages go further (e.g. Ruby), and have far more developed, standard systems of version management built right in -- rubygems will do the graph analysis of your module includes, resolve dependency cycles, enforce versioning, and so on. Python is a total mess when it comes to high-level dependency management, but only because it offers 3-4 different "standard" ways of doing it! Notably, Javascript didn't even have the the export or import keywords until ES6 (2015). It had literally no support for even the primitive, C-like version of the idea, and there were multiple competing implementations of it, from Node, to CommonJS, to RequireJS, Webpack, Babel and so on. But you still can't get rid of webpack, though -- JS has no built-in notion of minification or tree pruning, so that's all still implemented via a panoply of third-party tools.