Setup eslint and enforce rules

src/views/PugViewEngine.ts

@@ -1,6 +1,6 @@
-import {ViewEngine} from "./ViewEngine"
-import {Injectable} from "../di"
-import * as pug from "pug"
+import {ViewEngine} from './ViewEngine'
+import {Injectable} from '../di'
+import * as pug from 'pug'
 
 /**
  * Implementation of the ViewEngine class that renders Pug/Jade templates.
@@ -16,9 +16,13 @@ export class PugViewEngine extends ViewEngine {
 
     public renderByName(templateName: string, locals: { [p: string]: any }): string | Promise<string> {
         let compiled = this.compileCache[templateName]
-        if ( compiled ) return compiled(locals)
+        if ( compiled ) {
+            return compiled(locals)
+        }
 
-        if ( !templateName.endsWith('.pug') ) templateName += '.pug'
+        if ( !templateName.endsWith('.pug') ) {
+            templateName += '.pug'
+        }
         const filePath = this.path.concat(...templateName.split(':'))
         compiled = pug.compileFile(filePath.toLocal, this.getOptions())
 
@@ -30,7 +34,7 @@ export class PugViewEngine extends ViewEngine {
      * Get the object of options passed to Pug's compile methods.
      * @protected
      */
-    protected getOptions() {
+    protected getOptions(): pug.Options {
         return {
             basedir: this.path.toLocal,
             debug: this.debug,