Texa

A Deno web-framework inspired by Oak and Express, with built-in support for WebSockets, middleware and routing.

Features

TLS
Middlewares
Router
WebSockets
Sleek request & response objects.

Todos

Cookies.
<Response>.file(path: string).
Serve static files middleware.

Importing

import { Application, Router } from "https://deno.land/x/texa/mod.ts";

Creating an app

const app = new Application("127.0.0.1:3000");

Disabling WebSockets

const app = new Application("127.0.0.1:3000", {
    allowWebSocket: false
});

WebSockets

app.on("connection", async socket => {
    socket.on("message", async message => {
        // text message
    });
    socket.on("binary", async data => {
        // binary message
    });
    socket.on("ping", async data => {
        // ping event
    });
    socket.on("pong", async data => {
        // pong event
    });
    socket.on("close", async (closer, reason, message) => {
        // Close event
    });
});

Adding middleware

app.use(
    async (req, res, next) => {
        let err: Error | null = null;
        try
        {
            await next();
        } catch (error)
        {
            err = error;
            await res.status(500).end("Internal server error, if you're a developer you can check the server logs.");
        }
        console.log(
            "%s %dms %s%s",                       // The log template.
            req.method,                           // The request method.
            Date.now() - req.at,                  // The amount of ms it took from start to finish.
            res.statusCode,                       // The status code that was sent back.
            req,url.pathname,                     // The requested resource.
            err !== null ? ` - ${err.stack}` : "" // Include an error if an error occured.
        );
    }
);

Creating a router.

const router = new Router();
app.use(router);

Adding routes

router.get("/hello", async (req, res) => {
    await res.end("World");
});

Adding middleware to routers.

router.use(
    async (req, res, next) => {
        // Do something.
        await next();
    }
);

Or only run on a specific path.

router.use(
    "/path",
    async (req, res, next) => {
        res.end(req.url.pathname);
    }
);

Router params

All request methods on the router, or the use method, accepts a path, which can contain a parameter.

router.get("/user/:param", async (req, res) => {
    console.log(req.params);
    // { param: ... }
});

Here are the possible param options.

"/:requiredParam"
"/:requiredParam(withRegex)"
"/:optionalParam?"
"/:optionalParam(withRegex)?"
"/:zeroOrMoreOccurances*"
"/:zeroOrMoreOccurances(withRegex)*"
"/:oneOrMoreOccurances+"
"/:oneOrMoreOccurances(withRegex)+"

Middleware on object.

import { Middleware } from "https://deno.land/x/texa/mod.ts";

class MyMiddleware extends Middleware
{
    public value: string = "World";
    
    public run: Middleware["run"] = async (req, res, next) => {
        res.headers.set("X-Hello", this.value);
        await next();
    };
}

const middleware = new MyMiddleware();
app.use(middleware);

middleware.value = "Something else now";

HTTP and HTTPS

// Imports
import { Application, Router } from "https://deno.land/x/texa/mod.ts";

// Create application.
const app = new Router();

app.get("/", async (req, res) => {
    res.end("Welcome home!");
});

// Create http app.
const httpApp = new Application("0.0.0.0:80")
    .use(app);

// Create https app.
const httpsApp = new Application("0.0.0.0:443", {
    certFile: "/path/to/cert.pem",
    keyFile: "/path/to/key.pem"
}).use(app);

// Start listening for requests on both servers.
httpApp.start().catch(console.error);
httpApp.start().catch(console.error);