Avoid exporting symbols (microsoft#164940) (microsoft#166288)

Author: alexdima

src/vs/base/common/diff/diff.ts

@@ -69,7 +69,7 @@ export interface IDiffResult {
 // The code below has been ported from a C# implementation in VS
 //
 
-export class Debug {
+class Debug {
 
 	public static Assert(condition: boolean, message: string): void {
 		if (!condition) {
@@ -78,7 +78,7 @@ export class Debug {
 	}
 }
 
-export class MyArray {
+class MyArray {
 	/**
 	 * Copies a range of elements from an Array starting at the specified source index and pastes
 	 * them to another Array starting at the specified destination index. The length and the indexes

src/vs/editor/browser/viewParts/viewZones/viewZones.ts

@@ -14,7 +14,7 @@ import * as viewEvents from 'vs/editor/common/viewEvents';
 import { IEditorWhitespace, IViewWhitespaceViewportData, IWhitespaceChangeAccessor } from 'vs/editor/common/viewModel';
 import { EditorOption } from 'vs/editor/common/config/editorOptions';
 
-export interface IMyViewZone {
+interface IMyViewZone {
 	whitespaceId: string;
 	delegate: IViewZone;
 	isInHiddenArea: boolean;