afterglow

Runs Gleam web apps on Cloudflare Workers. afterglow compiles your app's BEAM bytecode to WebAssembly ahead of time and links it with a small Rust runtime.

afterglow is experimental, so expect breaking changes.

You don't add this package yourself. giolt build uses it for projects with target = "erlang", and needs Gleam and Erlang/OTP installed. Your entry module exports handle:

pub fn handle(req: wisp.Request) -> wisp.Response

The package holds afterglow.serve, which the generated start module calls. Its priv/ directory holds the runtime and a compiler for Linux and macOS (x64 and arm64) and Windows (x64).

Some OTP functions aren't implemented yet. giolt build lists the ones your app reaches, and a request that calls one gets a 500 naming it. The docs list the current limits.