Take Smalltalk, throw away the image, or go over further and throw away the standard library (it's important that JavaScript never really had one), and what would you have? Take the database away from MUMPS and it's not even MUMPS.
Languages and runtimes can't be separated, because you can't just transplant a language to a different runtime and maintain the same experience.
>Take Smalltalk, throw away the image, or go over further and throw away the standard library (it's important that JavaScript never really had one), and what would you have?
Still a damn fine language.
That said, I don't think it's necessary to drop the standard library to make Smalltalk a web language, nor that it's "important that JavaScript never really had one".
It would have been much better if it came with a better "batteries" for all basic stuff (parsing urls, string manipulation, making requests, etc) from the start.
Ditto for the image -- one could very easily have web images, in fact that's part of what WASM would eventually achieve.
Languages and runtimes can't be separated, because you can't just transplant a language to a different runtime and maintain the same experience.