alt Hacker NewsThat’s about the most basic imaginable implementation. Typically you use JavaScript runtimes like this to provide a plugin-like system for your static build that allows sandboxed customisation at runtime.
Take a look at the JavaScriptCore documentation to get a sense of what’s possible, it goes far beyond “piping the input”:
But what does bun bring to the table in that scenario? Why not interface with javascriptcore directly and skip the (unmaintained) middle man?
Bun provides the node standard library, I suppose, but you likely don't want it in a plugin system. Because the bulk of it is to deal with web requests, or to allow system-wide file/network/process access. So you're going to re-implement your own safe library anyway.