glen

🏕️ A peaceful web framework for Gleam that targets JS.

✨ Features:

• Request & response helpers
• Helpful middleware
• File streaming
• Websockets
• Bring-your-own server (optional)
• Easily deploy on serverless platforms such as Deno Deploy

…and other nice-to-haves!

Installation

Install all requirements:

gleam add glen gleam_http gleam_javascript

Or just Glen:

gleam add glen

Usage

import gleam/javascript/promise.{type Promise}
import glen
import glen/status

pub fn main() {
 glen.serve(handle_req, 8000)
}

fn handle_req(req: glen.Request) -> Promise(glen.Response) {
 "<h1>Welcome to my webpage!</h1>
 <p>Make yourself at home 😄</p>"
 |> glen.html(status.ok)
 |> promise.resolve
}

Glen is heavily based off of Wisp, and many of Wisp’s examples can easily be ported to Glen. Glen also has an example application of its own in ./test.

Bring-your-own server

Glen’s serve function only works on the deno runtime, but you can bring your own server so Glen can work on any runtime, such as Node.js (>= v17.0.0) or Cloudflare Workers. The convert_request and convert_response functions are here to help you with this.

import * as glen from '../glen/glen.mjs';
import * as my_app from './my_app.mjs';

export default {
 async fetch(request, _env, _ctx) {
   const req = glen.convert_request(request);
   const response = await my_app.handle_req(req);
   const res = glen.convert_response(response);

   return res;
 },
};

import gleam/javascript/promise
import glen
import glen/status

pub fn handle_req(_req) {
 "On a Cloudflare worker!"
 |> glen.html(status.ok)
 |> promise.resolve
}

main = "build/dev/javascript/my_app/index.js"
# ...

Docs

Documentation can be found at https://hexdocs.pm/glen.

Development

gleam run   # Run the project
gleam test  # Run the example application