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# Fastro
Fast and simple web application framework for deno.
With [near-native speeds](https://deno.land/x/fastro@v{{version}}/benchmarks), you
can manage routing and middleware cleanly. And take advantage of existing deno
objects and methods: [Request](https://deno.com/deploy/docs/runtime-request),
[Response](https://deno.com/deploy/docs/runtime-request),
[Headers](https://deno.com/deploy/docs/runtime-headers), and
[Cookie](https://deno.land/std@0.133.0/http)
## Examples
- [Getting Started](#getting-started)
- [Custom Port](#custom-port)
- [Set, Get, and Delete a Cookie](#set-get-and-delete-a-cookie)
- [Render with Eta Template Engine](#render-with-eta-template-engine)
- [Routing](#routing)
- [Route Parameters](#route-parameters)
- [Router Middleware](#router-middleware)
- [Router Middleware with Array](#route-level-middleware-with-array)
- [Application Level Middleware](#application-level-middleware)
- [Application Level Middleware with Array](#application-level-middleware-with-array)
- [Route Level Middleware](#route-level-middleware)
- [Route Level Middleware with Array](#route-level-middleware-with-array)
- [Benchmarks](https://deno.land/x/fastro@v{{version}}/benchmarks)
## Getting started
```ts
import application from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
const app = application();
app.get("/", () => new Response("Hello world"));
console.log("Listening on: http://localhost:8000");
await app.serve();
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/main.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/main.ts)
## Custom port
```ts
import application from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
const app = application();
app.get("/", () => new Response("Hello world!"));
await app.serve({ port: 3000 });
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/custom_port.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/custom_port.ts)
## Render with Eta Template Engine
```ts
import application from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
import { render } from "https://deno.land/x/eta@v1.12.3/mod.ts";
const app = application();
const headers = new Headers();
headers.set("Content-Type", "text/html; charset=UTF-8");
app.get("/", () => {
const html = <string> render(
"<h4>The answer to everything is <%= it.answer %></h4>",
{
answer: 42,
},
);
return new Response(html, { headers });
});
console.log("Listening on: http://localhost:8000");
app.serve();
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/render.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/render.ts)
## Set, Get, and Delete a Cookie
```ts
import {
Cookie,
deleteCookie,
getCookies,
setCookie,
} from "https://deno.land/std@0.133.0/http/cookie.ts";
import application from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
const app = application();
app.post("/", () => {
const headers = new Headers();
const cookie: Cookie = { name: "Space", value: "Cat" };
setCookie(headers, cookie);
return new Response(JSON.stringify(cookie), { headers });
});
app.get("/", (req: Request) => {
const headers = req.headers;
const cookies = getCookies(headers);
return new Response(JSON.stringify(cookies));
});
app.delete("/", () => {
const headers = new Headers();
deleteCookie(headers, "Space");
const cookies = getCookies(headers);
return new Response(JSON.stringify(cookies), {
headers,
});
});
console.log("Listening on: http://localhost:8000");
app.serve();
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/cookies.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/cookies.ts)
## Routing
```ts
import application from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
const app = application();
app.get("/abcd", () => new Response("/abcd"));
app.get("/ef?gh", () => new Response("/ef?gh"));
app.get("/ij+kl", () => new Response("/ij+kl"));
app.get("/mn*op", () => new Response("mn*op"));
app.get("/qr(st)?u", () => new Response("qr(st)?u"));
app.get(/v/, () => new Response("/v/"));
app.get(/.*fast$/, () => new Response("/.*fast$/"));
await app.serve();
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/routing.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/routing.ts)
## Route parameters
```ts
import application, {
getParam,
getParams,
} from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
const app = application();
app.get("/:id/user/:name", (req: Request) => {
const params = getParams(req);
return new Response(JSON.stringify({ params }));
});
app.get("/post/:id", (req: Request) => {
const param = getParam("id", req);
return new Response(param);
});
await app.serve();
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/route_params.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/route_params.ts)
## Router Middleware
```ts
import application, {
ConnInfo,
Next,
router,
} from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
const app = application();
const r = router();
const middleware = (_req: Request, _connInfo: ConnInfo, next: Next) => {
console.log("v2 - 1");
next();
};
r.get("/", () => new Response("Get"))
.post("/", () => new Response("Post"))
.put("/", () => new Response("Put"))
.delete("/", () => new Response("Delete"));
app.use("/v1", r);
app.use("/v2", middleware, r);
await app.serve();
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/router_middleware.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/router_middleware.ts)
## Router Middleware with Array
```ts
import application, {
ConnInfo,
Next,
router,
} from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
const app = application();
const r = router();
const middlewares = [(_req: Request, _connInfo: ConnInfo, next: Next) => {
console.log("v2 - 1");
next();
}, (_req: Request, _connInfo: ConnInfo, next: Next) => {
console.log("v2 - 2");
next();
}];
r.get("/", () => new Response("Get"))
.post("/", () => new Response("Post"))
.put("/", () => new Response("Put"))
.delete("/", () => new Response("Delete"));
app.use("/v1", r);
app.use("/v2", middlewares, r);
await app.serve();
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/router_middleware_with_array.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/router_middleware_with_array.ts)
## Application Level Middleware
```ts
import application, {
ConnInfo,
Next,
} from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
const app = application();
app.use((_req: Request, _conn: ConnInfo, next: Next) => {
console.log("app middleware #1");
next();
});
app.use((_req: Request, _conn: ConnInfo, next: Next) => {
console.log("app middleware #2");
next();
});
app.use((_req: Request, _conn: ConnInfo, next: Next) => {
console.log("app middleware #3");
next();
}, (_req: Request, _conn: ConnInfo, next: Next) => {
console.log("app middleware #4");
next();
});
app.get("/", () => new Response("App level #1"));
await app.serve();
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/application_level_middleware.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/application_level_middleware.ts)
## Application Level Middleware with Array
```ts
import application, {
ConnInfo,
Next,
} from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
const app = application();
const middlewares = [(_req: Request, _conn: ConnInfo, next: Next) => {
console.log("middleware #1");
next();
}, (_req: Request, _conn: ConnInfo, next: Next) => {
console.log("middleware #2");
next();
}, (_req: Request, _conn: ConnInfo, next: Next) => {
console.log("middleware #3");
next();
}, (_req: Request, _conn: ConnInfo, next: Next) => {
console.log("middleware #4");
next();
}];
app.use(middlewares);
app.get("/", () => new Response("App level #1"));
await app.serve();
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/application_level_middleware_with_array.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/application_level_middleware_with_array.ts)
## Route Level Middleware
```ts
import application, {
ConnInfo,
Next,
} from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
const app = application();
app.use((_req: Request, _conn: ConnInfo, next: Next) => {
console.log("app middleware #1");
next();
});
app.use((_req: Request, _conn: ConnInfo, next: Next) => {
console.log("app middleware #2");
next();
});
app.use((_req: Request, _conn: ConnInfo, next: Next) => {
console.log("app middleware #3");
next();
}, (_req: Request, _conn: ConnInfo, next: Next) => {
console.log("app middleware #4");
next();
});
app.get("/", () => new Response("App level #1"));
await app.serve();
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/route_level_middleware.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/route_level_middleware.ts)
## Route Level Middleware with Array
```ts
import application, {
ConnInfo,
Next,
} from "https://deno.land/x/fastro@v{{version}}/server/mod.ts";
const app = application();
const middlewares = [(_req: Request, _conn: ConnInfo, next: Next) => {
console.log("middleware #1");
next();
}, (_req: Request, _conn: ConnInfo, next: Next) => {
console.log("middleware #2");
next();
}, (_req: Request, _conn: ConnInfo, next: Next) => {
console.log("middleware #3");
next();
}, (_req: Request, _conn: ConnInfo, next: Next) => {
console.log("middleware #4");
next();
}];
app.get("/mnop", middlewares, () => new Response("Route level middleware #3"));
await app.serve();
```
```
deno run -A https://deno.land/x/fastro@v{{version}}/examples/route_level_middleware_with_array.ts
```
[](https://dash.deno.com/new?url=https://deno.land/x/fastro@{{version}}/examples/route_level_middleware_with_array.ts)