debug: bring back toString it is used for copyAll action

fixes #45967

src/vs/workbench/parts/debug/common/debugModel.ts

@@ -38,6 +38,9 @@ export abstract class AbstractReplElement implements IReplElement {
 	public getId(): string {
 		return `replelement:${this.id}`;
 	}
+
+	// Used by the copy all action in repl
+	abstract toString(): string;
 }
 
 export class SimpleReplElement extends AbstractReplElement {
@@ -49,6 +52,10 @@ export class SimpleReplElement extends AbstractReplElement {
 	) {
 		super(source);
 	}
+
+	public toString(): string {
+		return this.value;
+	}
 }
 
 export class RawObjectReplElement extends AbstractReplElement implements IExpression {
@@ -89,6 +96,10 @@ export class RawObjectReplElement extends AbstractReplElement implements IExpres
 
 		return TPromise.as(result);
 	}
+
+	public toString(): string {
+		return `${this.name}\n${this.value}`;
+	}
 }
 
 export class ExpressionContainer implements IExpressionContainer {

src/vs/workbench/parts/debug/electron-browser/electronDebugActions.ts

@@ -9,7 +9,7 @@ import { TPromise } from 'vs/base/common/winjs.base';
 import { ITree } from 'vs/base/parts/tree/browser/tree';
 import { removeAnsiEscapeCodes } from 'vs/base/common/strings';
 import { Variable } from 'vs/workbench/parts/debug/common/debugModel';
-import { IDebugService, IStackFrame } from 'vs/workbench/parts/debug/common/debug';
+import { IDebugService, IStackFrame, IReplElement } from 'vs/workbench/parts/debug/common/debug';
 import { clipboard } from 'electron';
 
 export class CopyValueAction extends Action {
@@ -77,7 +77,7 @@ export class CopyAllAction extends Action {
 			if (text) {
 				text += `\n`;
 			}
-			text += navigator.current().toString();
+			text += (<IReplElement>navigator.current()).toString();
 		}
 
 		clipboard.writeText(removeAnsiEscapeCodes(text));