Setup eslint and enforce rules

src/orm/connection/Connection.ts

@@ -1,7 +1,7 @@
-import {Collection, ErrorWithContext} from "../../util";
-import {QueryResult} from "../types";
-import {SQLDialect} from "../dialect/SQLDialect";
-import {AppClass} from "../../lifecycle/AppClass";
+import {ErrorWithContext} from '../../util'
+import {QueryResult} from '../types'
+import {SQLDialect} from '../dialect/SQLDialect'
+import {AppClass} from '../../lifecycle/AppClass'
 
 /**
  * Error thrown when a connection is used before it is ready.
@@ -30,7 +30,9 @@ export abstract class Connection extends AppClass {
          * This connection's config object
          */
         public readonly config: any = {},
-    ) { super() }
+    ) {
+        super()
+    }
 
     public abstract dialect(): SQLDialect
 

src/orm/connection/PostgresConnection.ts

@@ -1,11 +1,11 @@
-import {Connection, ConnectionNotReadyError} from "./Connection";
-import {Client} from "pg";
-import {Inject} from "../../di";
-import {QueryResult} from "../types";
-import {collect} from "../../util";
-import {SQLDialect} from "../dialect/SQLDialect";
-import {PostgreSQLDialect} from "../dialect/PostgreSQLDialect";
-import {Logging} from "../../service/Logging";
+import {Connection, ConnectionNotReadyError} from './Connection'
+import {Client} from 'pg'
+import {Inject} from '../../di'
+import {QueryResult} from '../types'
+import {collect} from '../../util'
+import {SQLDialect} from '../dialect/SQLDialect'
+import {PostgreSQLDialect} from '../dialect/PostgreSQLDialect'
+import {Logging} from '../../service/Logging'
 
 /**
  * Type interface representing the config for a PostgreSQL connection.
@@ -32,13 +32,13 @@ export class PostgresConnection extends Connection {
         return <PostgreSQLDialect> this.app().make(PostgreSQLDialect)
     }
 
-    public async init() {
+    public async init(): Promise<void> {
         this.logging.debug(`Initializing PostgreSQL connection ${this.name}...`)
         this.client = new Client(this.config)
         await this.client.connect()
     }
 
-    public async close() {
+    public async close(): Promise<void> {
         this.logging.debug(`Closing PostgreSQL connection ${this.name}...`)
         if ( this.client ) {
             await this.client.end()
@@ -46,8 +46,11 @@ export class PostgresConnection extends Connection {
     }
 
     public async query(query: string): Promise<QueryResult> {
-        if ( !this.client ) throw new ConnectionNotReadyError(this.name, { config: JSON.stringify(this.config) })
-        this.logging.verbose(`Executing query in connection ${this.name}: \n${query.split('\n').map(x => '    ' + x).join('\n')}`)
+        if ( !this.client ) {
+            throw new ConnectionNotReadyError(this.name, { config: JSON.stringify(this.config) })
+        }
+        this.logging.verbose(`Executing query in connection ${this.name}: \n${query.split('\n').map(x => '    ' + x)
+            .join('\n')}`)
 
         try {
             const result = await this.client.query(query)