Setup eslint and enforce rules

src/orm/DatabaseService.ts

@@ -1,8 +1,8 @@
-import {Connection} from "./connection/Connection";
-import {Inject, Singleton} from "../di";
-import {ErrorWithContext, uuid_v4} from "../util";
-import {AppClass} from "../lifecycle/AppClass";
-import {Logging} from "../service/Logging";
+import {Connection} from './connection/Connection'
+import {Inject, Singleton} from '../di'
+import {ErrorWithContext, uuid4} from '../util'
+import {AppClass} from '../lifecycle/AppClass'
+import {Logging} from '../service/Logging'
 
 /**
  * A singleton, non-unit service that stores and retrieves database connections by name.
@@ -20,20 +20,21 @@ export class DatabaseService extends AppClass {
      * @param name
      * @param connection
      */
-    register(name: string, connection: Connection) {
+    register(name: string, connection: Connection): this {
         if ( this.connections[name] ) {
             this.logging.warn(`Overriding duplicate connection: ${name}`)
         }
 
         this.connections[name] = connection
+        return this
     }
 
     /**
      * Returns true if a connection is registered with the given name.
      * @param name
      */
-    has(name: string) {
-        return !!this.connections[name]
+    has(name: string): boolean {
+        return Boolean(this.connections[name])
     }
 
     /**
@@ -57,10 +58,10 @@ export class DatabaseService extends AppClass {
 
     /** Get a guaranteed-unique connection name. */
     uniqueName(): string {
-        let name: string;
+        let name: string
 
         do {
-            name = uuid_v4()
+            name = uuid4()
         } while (this.has(name))
 
         return name