Create ICharDimensionsService

src/ui/services/Services.d.ts

@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) 2019 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { IEvent } from 'common/EventEmitter2';
+
+export interface ICharDimensionsService {
+  readonly width: number;
+  readonly height: number;
+  readonly onCharDimensionsChange: IEvent<string>;
+  measure(): void;
+}