There is a TC39 proposal for a standard library[1]. One of the ideas reserves a URL scheme built in modules. So to import from a language defined standard libra

There is a TC39 proposal for a standard library[1]. One of the ideas reserves a URL scheme built in modules. So to import from a language defined standard library you would use the "js" scheme (import Temporal from "js:temporal") and importing from the runtime you could potentially use e.g. "web" scheme (import AudioContext from "web:audio-context"). I really hope we will have something like that. It would both give us the option of never using magical globals and make the distinction clear whether the module comes from the language or the runtime. Although I can see a case where it could get annoying if you are writing for multiple runtimes and need to get e.g. fetch (import fetch from "runtime:fetch"). 1: https://github.com/tc39/proposal-built-in-modules https://github.com/tc39/proposal-built-in-modules