feat(server): basic implementation of server runtime and SDK (#13)

* feat(server): basic implementation of server runtime and SDK
* refactor: better typing

packages/server-sdk/src/client.ts

@@ -0,0 +1,35 @@
+import type { WebSocketEvent, WebSocketEvents } from '@proj-airi/server-shared/types'
+import type { Blob } from 'node:buffer'
+import WebSocket from 'crossws/websocket'
+import { defu } from 'defu'
+
+export interface ClientOptions {
+  url?: string
+  name: string
+  possibleEvents?: Array<(keyof WebSocketEvents)>
+}
+
+export class Client {
+  private websocket: WebSocket
+
+  constructor(options: ClientOptions) {
+    const opts = defu<Required<ClientOptions>, Required<Omit<ClientOptions, 'name'>>[]>(options, { url: 'ws://localhost:6121/ws', possibleEvents: [] })
+
+    this.websocket = new WebSocket(opts.url)
+    this.send({
+      type: 'module:announce',
+      data: {
+        name: opts.name,
+        possibleEvents: opts.possibleEvents,
+      },
+    })
+  }
+
+  send(data: WebSocketEvent): void {
+    this.websocket.send(JSON.stringify(data))
+  }
+
+  sendRaw(data: string | ArrayBufferLike | Blob | ArrayBufferView): void {
+    this.websocket.send(data)
+  }
+}

packages/server-sdk/src/index.ts

@@ -0,0 +1 @@
+export * from './client'