Stopping sending literal errors

Errors now must be of "Error" type.
Rule added in eslint.

pusher/src/Controller/AdminController.ts

@@ -39,7 +39,7 @@ export class AdminController extends BaseController {
 
             try {
                 if (typeof body.roomId !== "string") {
-                    throw "Incorrect roomId parameter";
+                    throw new Error("Incorrect roomId parameter");
                 }
                 const roomId: string = body.roomId;
 
@@ -86,13 +86,13 @@ export class AdminController extends BaseController {
 
             try {
                 if (typeof body.text !== "string") {
-                    throw "Incorrect text parameter";
+                    throw new Error("Incorrect text parameter");
                 }
                 if (body.type !== "capacity" && body.type !== "message") {
-                    throw "Incorrect type parameter";
+                    throw new Error("Incorrect type parameter");
                 }
                 if (!body.targets || typeof body.targets !== "object") {
-                    throw "Incorrect targets parameter";
+                    throw new Error("Incorrect targets parameter");
                 }
                 const text: string = body.text;
                 const type: string = body.type;