feat(typescript): add initial types

index.d.ts

@@ -0,0 +1,97 @@
+/// <reference types="node" />
+import * as fastify from 'fastify';
+import { IncomingMessage, ServerResponse, Server } from 'http';
+import { Plugin } from 'fastify';
+import * as WebSocket from 'ws';
+import { Duplex } from 'stream';
+
+declare module 'fastify' {
+  interface RouteShorthandOptions<
+    HttpServer,
+    HttpRequest,
+    HttpResponse,
+    Query,
+    Params,
+    Headers,
+    Body
+  > {
+    websocket?: boolean;
+  }
+  interface FastifyInstance<
+    HttpServer = Server,
+    HttpRequest = IncomingMessage,
+    HttpResponse = ServerResponse
+  > {
+    get<
+      Query = DefaultQuery,
+      Params = DefaultParams,
+      Headers = DefaultHeaders,
+      Body = DefaultBody
+    >(
+      url: string,
+      opts: RouteShorthandOptions<
+        HttpServer,
+        HttpRequest,
+        HttpResponse,
+        Query,
+        Params,
+        Headers,
+        Body
+      >,
+      handler?: WebsocketHandler<HttpRequest, HttpResponse>
+    ): FastifyInstance<HttpServer, HttpRequest, HttpResponse>;
+  }
+
+  interface RouteOptions<
+    HttpServer = Server,
+    HttpRequest = IncomingMessage,
+    HttpResponse = ServerResponse,
+    Query = DefaultQuery,
+    Params = DefaultParams,
+    Headers = DefaultHeaders,
+    Body = DefaultBody
+  > {
+    wsHandler?: WebsocketHandler<
+      HttpRequest,
+      HttpResponse,
+      Query,
+      Params,
+      Headers,
+      Body
+    >;
+  }
+
+  export type WebsocketHandler<
+    HttpRequest = IncomingMessage,
+    HttpResponse = ServerResponse,
+    Query = DefaultQuery,
+    Params = DefaultParams,
+    Headers = DefaultHeaders,
+    Body = DefaultBody
+  > = (
+    this: FastifyInstance<Server, HttpRequest, HttpResponse>,
+    connection: websocketPlugin.SocketStream,
+    request: FastifyRequest<HttpRequest, Query, Params, Headers, Body>,
+    params?: { [key: string]: any }
+  ) => void | Promise<any>;
+}
+
+declare namespace websocketPlugin {
+  export interface SocketStream extends Duplex {
+    socket: WebSocket;
+  }
+
+  export interface PluginOptions {
+    handle: (connection: SocketStream) => void;
+    options: WebSocket.ServerOptions;
+  }
+}
+
+declare const websocketPlugin: Plugin<
+  Server,
+  IncomingMessage,
+  ServerResponse,
+  websocketPlugin.PluginOptions
+>;
+
+export = websocketPlugin;

package.json

@@ -3,10 +3,16 @@
   "version": "1.0.0",
   "description": "basic websocket support for fastify",
   "main": "index.js",
+  "types": "index.d.ts",
+  "tsd": {
+    "directory": "./test/types"
+  },
   "scripts": {
     "lint": "standard | snazzy",
     "unit": "tap \"test/*.js\"",
-    "test": "npm run lint && npm run unit"
+    "test:js": "npm run lint && npm run unit",
+    "test:ts": "tsd",
+    "test": "npm run test:js && npm run test:ts"
   },
   "repository": {
     "type": "git",
@@ -23,11 +29,13 @@
   },
   "homepage": "https://github.com/fastify/fastify-websocket#readme",
   "devDependencies": {
+    "@types/ws": "^6.0.3",
     "fastify": "^2.4.1",
     "pre-commit": "^1.2.2",
     "snazzy": "^8.0.0",
     "standard": "^14.0.2",
-    "tap": "^12.7.0"
+    "tap": "^12.7.0",
+    "tsd": "^0.11.0"
   },
   "dependencies": {
     "fastify-plugin": "^1.5.0",

test/types/index.test-d.ts

@@ -0,0 +1,19 @@
+const wsPlugin = require('../..');
+const fastify = require('fastify');
+import { SocketStream } from '../..';
+import { WebsocketHandler, FastifyRequest, FastifyInstance } from 'fastify';
+import { expectType } from 'tsd';
+
+const app: FastifyInstance = fastify();
+app.register(wsPlugin);
+
+const handler: WebsocketHandler = (
+  connection: SocketStream,
+  req: FastifyRequest,
+  params
+) => {
+  expectType<SocketStream>(connection);
+  expectType<{ [key: string]: any } | undefined>(params);
+};
+
+app.get('/', { websocket: true }, handler);

tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+    "target": "es6",
+    "lib": ["es2015"],
+    "module": "commonjs",
+    "noEmit": true,
+    "strict": true,
+    "noImplicitAny": true
+  },
+  "includes": ["./test/types/*.test-d.ts", "index.d.ts"]
+}