---
title: Router
source: https://github.com/remix-run/remix/blob/remix@3.0.0-beta.2/packages/fetch-router/src/lib/router.ts#L119
---

# Router

## Summary

A router maps incoming requests to request handlers.

## Signature

```ts
interface Router<context> {
  delete: VerbMethod<"DELETE", context>;
  get: VerbMethod<"GET", context>;
  head: VerbMethod<"HEAD", context>;
  options: VerbMethod<"OPTIONS", context>;
  patch: VerbMethod<"PATCH", context>;
  post: VerbMethod<"POST", context>;
  put: VerbMethod<"PUT", context>;
  fetch(input: string | Request | URL, init: RequestInit): Promise<Response>;
  map<pattern extends string, actionContext extends AnyContext>(
    target: RouteTarget<pattern>,
    action: Action<RouteTarget<pattern, RequestMethod | "ANY">, actionContext>,
  ): void;
  map<target extends RouteMap<string>, controllerContext extends AnyContext>(
    target: target,
    controller: Controller<target, controllerContext>,
  ): void;
  route<
    method extends RequestMethod | "ANY",
    pattern extends string,
    actionContext extends AnyContext,
  >(
    method: method,
    pattern: RouteTarget<pattern, method>,
    action: Action<RouteTarget<pattern, method>, actionContext>,
  ): void;
}

```

## Properties

### `delete`

Shorthand for registering a `DELETE` route.

### `get`

Shorthand for registering a `GET` route.

### `head`

Shorthand for registering a `HEAD` route.

### `options`

Shorthand for registering an `OPTIONS` route.

### `patch`

Shorthand for registering a `PATCH` route.

### `post`

Shorthand for registering a `POST` route.

### `put`

Shorthand for registering a `PUT` route.

## Methods

### `fetch(input: string | Request | URL, init: RequestInit): Promise<Response>`

Fetch a response from the router.

#### Parameters

##### `input`

The request input to fetch

##### `init`

The request init options

### `map<pattern extends string, actionContext extends AnyContext>(target: RouteTarget<pattern>, action: Action<RouteTarget<pattern, RequestMethod | "ANY">, actionContext>): void`

Maps either a single route target to an action or a route map to a controller.



### `map<target extends RouteMap<string>, controllerContext extends AnyContext>(target: target, controller: Controller<target, controllerContext>): void`



### `route<method extends RequestMethod | "ANY", pattern extends string, actionContext extends AnyContext>(method: method, pattern: RouteTarget<pattern, method>, action: Action<RouteTarget<pattern, method>, actionContext>): void`

Registers a handler for a specific request method and route target.

Accepts either a plain request handler or an action object with optional inline middleware.