The compiler architecture moves complexity from the runtime and source code to buildtime and tools. Behind Svelte’s simple APIs sits a beefy compiler. Frontend web development has become very tool heavy in the webapp era, so in practice this adds little cost beyond what developers like myself already pay, but increased build complexity is important to acknowledge.

Now just use the browserify command to build a bundle starting at main.js:

When compiling Ruby, you might accidentally introduce a dependency on a non-standard library! As a developer you probably have all sorts non-standard libraries installed on your system. While compiling Ruby, the Ruby build system autodetects certain libraries and links to them.