Setup eslint and enforce rules

src/service/Middlewares.ts

@@ -1,7 +1,7 @@
-import {CanonicalStatic} from "./CanonicalStatic";
-import {Singleton, Instantiable} from "../di";
-import {CanonicalDefinition} from "./Canonical";
-import {Middleware} from "../http/routing/Middleware";
+import {CanonicalStatic} from './CanonicalStatic'
+import {Singleton, Instantiable, StaticClass} from '../di'
+import {CanonicalDefinition} from './Canonical'
+import {Middleware} from '../http/routing/Middleware'
 
 /**
  * A canonical unit that loads the middleware classes from `app/http/middlewares`.
@@ -9,10 +9,12 @@ import {Middleware} from "../http/routing/Middleware";
 @Singleton()
 export class Middlewares extends CanonicalStatic<Instantiable<Middleware>, Middleware> {
     protected appPath = ['http', 'middlewares']
+
     protected canonicalItem = 'middleware'
+
     protected suffix = '.middleware.js'
 
-    public async initCanonicalItem(definition: CanonicalDefinition) {
+    public async initCanonicalItem(definition: CanonicalDefinition): Promise<StaticClass<Instantiable<Middleware>, Middleware>> {
         const item = await super.initCanonicalItem(definition)
         if ( !(item.prototype instanceof Middleware) ) {
             throw new TypeError(`Invalid middleware definition: ${definition.originalName}. Controllers must extend from @extollo/lib.http.routing.Middleware.`)