Setup eslint and enforce rules

src/util/error/ErrorWithContext.ts

@@ -14,13 +14,16 @@
  */
 export class ErrorWithContext extends Error {
     public context: {[key: string]: any} = {}
+
     public originalError?: Error
 
     constructor(
         message: string,
-        context?: {[key: string]: any}
+        context?: {[key: string]: any},
     ) {
         super(message)
-        if ( context ) this.context = context
+        if ( context ) {
+            this.context = context
+        }
     }
 }