Style.

src/operations/operationForm.component.ts

@@ -1,5 +1,7 @@
 // vim: set tw=80 ts=2 sw=2 sts=2 :
-import { AfterViewChecked, Component, EventEmitter, Input, Output, ViewChild } from '@angular/core';
+import {
+  AfterViewChecked, Component, EventEmitter, Input, Output, ViewChild
+} from '@angular/core';
 import { NgForm } from '@angular/forms';
 
 import { Operation } from './operation';