Show HN: QuickBEAM – run JavaScript as supervised Erlang/OTP processes

QuickBEAM

JavaScript runtime for the BEAM — Web APIs backed by OTP, native DOM, and a built-in TypeScript toolchain.

JS runtimes are GenServers. They live in supervision trees, send and receive messages, and call into Erlang/OTP libraries — all without leaving the BEAM.

Installation

def deps do [ { :quickbeam , "~> 0.7.1" } ] end

Requires Zig 0.15+ (installed automatically by Zigler, or use system Zig).

Quick start

{ :ok , rt } = QuickBEAM . start ( ) { :ok , 3 } = QuickBEAM . eval ( rt , "1 + 2" ) { :ok , "HELLO" } = QuickBEAM . eval ( rt , "'hello'.toUpperCase()" ) # State persists across calls QuickBEAM . eval ( rt , "function greet(name) { return 'hi ' + name }" ) { :ok , "hi world" } = QuickBEAM . call ( rt , "greet" , [ "world" ] ) QuickBEAM . stop ( rt )

BEAM integration

JS can call Elixir functions and access OTP libraries:

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