Setup eslint and enforce rules

src/cli/directive/TemplateDirective.ts

@@ -1,8 +1,8 @@
-import {Directive, OptionDefinition} from "../Directive"
-import {PositionalOption} from "./options/PositionalOption"
-import {CommandLine} from "../service"
-import {Inject, Injectable} from "../../di";
-import {ErrorWithContext} from "../../util";
+import {Directive, OptionDefinition} from '../Directive'
+import {PositionalOption} from './options/PositionalOption'
+import {CommandLine} from '../service'
+import {Inject, Injectable} from '../../di'
+import {ErrorWithContext} from '../../util'
 
 /**
  * Create a new file based on a template registered with the CommandLine service.
@@ -46,11 +46,11 @@ export class TemplateDirective extends Directive {
             '',
             ...(registeredTemplates.map(template => {
                 return `  - ${template.name}: ${template.description}`
-            }).all())
+            }).all()),
         ].join('\n')
     }
 
-    async handle(argv: string[]) {
+    async handle(): Promise<void> {
         const templateName: string = this.option('template_name')
         const destinationName: string = this.option('file_name')