add types definition (#218)

* add types definition

index.d.ts

@@ -0,0 +1,59 @@
+import SocketIOClient from "socket.io-client";
+import {
+    DefaultComputed,
+    DefaultData,
+    DefaultMethods,
+    DefaultProps,
+    PropsDefinition,
+} from "vue/types/options";
+import { Vue } from "vue/types/vue";
+import { PluginFunction, PluginObject } from "vue";
+import { Store } from "vuex";
+
+interface socketHandler<T> {
+    (this: T, ...args: any[]): void
+}
+
+interface Sockets<V> {
+    [key: string]: socketHandler<V>
+}
+
+declare module 'vue/types/vue' {
+    interface Vue {
+        $socket: SocketIOClient.Socket,
+        sockets: {
+            subscribe(eventName: string, handler: socketHandler<Vue>): void,
+            unsubscribe(eventName: string): void,
+        }
+    }
+}
+
+declare module 'vue/types/options' {
+    interface ComponentOptions<
+        V extends Vue,
+        Data=DefaultData<V>,
+        Methods=DefaultMethods<V>,
+        Computed=DefaultComputed,
+        PropsDef=PropsDefinition<DefaultProps>,
+        Props=DefaultProps> {
+        sockets?: Sockets<V>
+    }
+}
+
+export interface VueSocketOptions {
+    debug?: boolean;
+    connection: string | SocketIOClient.Socket,
+    vuex?: {
+        store?: Store<any>,
+        actionPrefix?: string,
+        mutationPrefix?: string,
+        options?: {
+            useConnectionNamespace?: boolean
+        }
+    }
+}
+
+export default class VueSocketIO<T> implements PluginObject<T> {
+    constructor (options: VueSocketOptions);
+    install: PluginFunction<T>
+}

package.json

@@ -38,6 +38,8 @@
     "@babel/preset-env": "^7.1.0",
     "babel-loader": "^8.0.4",
     "cross-env": "^5.2.0",
+    "vue": "^2.6.10",
+    "vuex": "^3.1.1",
     "webpack": "^4.23.1",
     "webpack-cli": "^3.1.2"
   }