Elixir in your browser⁠.

Just plain Elixir

Supervisors, GenServers, and any other OTP components just work. The VM runs off the browser's main thread, so a busy process never freezes the page.

Optimised for the web

Under 1 MB of compressed Wasm, with around 2.9 MB for Elixir and the OTP standard library. It boots in about 200 ms. Getting there meant cutting what the browser has no use for — native sockets, distribution, dynamic module loading, crash dumps.

Your dependencies come with you

Req, Jason, Ecto, even Phoenix Live View compile and run unmodified. The bundler packs your whole dependency closure, so there's nothing to list.

Requests coming from Elixir use fetch() automatically.

Call Elixir from JavaScript (and vice versa)

Communicate with Elixir processes, exchange data, run JS from Elixir code.

const result =
  await popcorn.genserver.call(
    "counter",
    ["add", 1],
  );
if (result.ok) {
  console.log(result.data);
}