Fix compile

src/browser/services/CharSizeService.ts

@@ -4,10 +4,11 @@
  */
 
 import { IOptionsService } from 'common/services/Services';
-import { IEvent, EventEmitter } from 'common/EventEmitter';
+import { EventEmitter } from 'common/EventEmitter';
 import { ICharSizeService } from 'browser/services/Services';
+import { Disposable } from 'common/Lifecycle';
 
-export class CharSizeService implements ICharSizeService {
+export class CharSizeService extends Disposable implements ICharSizeService {
   public serviceBrand: undefined;
 
   public width: number = 0;
@@ -24,6 +25,7 @@ export class CharSizeService implements ICharSizeService {
     parentElement: HTMLElement,
     @IOptionsService private readonly _optionsService: IOptionsService
   ) {
+    super();
     this._measureStrategy = new DomMeasureStrategy(document, parentElement, this._optionsService);
   }
 

src/common/services/UnicodeService.ts

@@ -5,27 +5,28 @@
 import { IUnicodeService, IUnicodeVersionProvider } from 'common/services/Services';
 import { EventEmitter, IEvent } from 'common/EventEmitter';
 import { UnicodeV6 } from 'common/input/UnicodeV6';
-import { Disposable } from 'common/Lifecycle';
 
-
-export class UnicodeService extends Disposable implements IUnicodeService {
+export class UnicodeService implements IUnicodeService {
   public serviceBrand: any;
 
   private _providers: {[key: string]: IUnicodeVersionProvider} = Object.create(null);
   private _active: string = '';
   private _activeProvider: IUnicodeVersionProvider;
 
-  private readonly _onChange = super.register(new EventEmitter<string>();
+  private readonly _onChange = new EventEmitter<string>();
   public readonly onChange = this._onChange.event;
 
   constructor() {
-    super();
     const defaultProvider = new UnicodeV6();
     this.register(defaultProvider);
     this._active = defaultProvider.version;
     this._activeProvider = defaultProvider;
   }
 
+  public dispose(): void {
+    this._onChange.dispose();
+  }
+
   public get versions(): string[] {
     return Object.keys(this._providers);
   }