refactor after review

src/debugger.ts

@@ -129,8 +129,8 @@ export namespace Debugger {
       return this._currentLineChanged;
     }
 
-    get clearLines() {
-      return this._clearLines;
+    get linesCleared() {
+      return this._LinesCleared;
     }
 
     dispose(): void {
@@ -151,7 +151,7 @@ export namespace Debugger {
     private _mode: IDebugger.Mode;
     private _modeChanged = new Signal<this, IDebugger.Mode>(this);
     private _currentLineChanged = new Signal<this, number>(this);
-    private _clearLines = new Signal<this, void>(this);
+    private _LinesCleared = new Signal<this, void>(this);
   }
 
   export namespace Model {

src/index.ts

@@ -281,7 +281,7 @@ const main: JupyterFrontEndPlugin<IDebugger> = {
 
         sidebar.id = 'jp-debugger-sidebar';
         sidebar.title.label = 'Environment';
-        shell.add(sidebar, 'right', { activate: true });
+        shell.add(sidebar, 'right', { activate: false });
       }
     });
 

src/service.ts

@@ -48,7 +48,7 @@ export class DebugService implements IDebugger.IService {
         void this.getFramesAllData();
       } else if (event.event === 'continued') {
         this._threadStopped.delete(event.body.threadId);
-        this._model.clearLines.emit();
+        this._model.linesCleared.emit();
       }
       this._eventMessage.emit(event);
     });