diff --git a/src/vs/workbench/contrib/chat/browser/actions/chatActions.ts b/src/vs/workbench/contrib/chat/browser/actions/chatActions.ts
index 29731511a132a..79cf60bebcfa4 100644
--- a/src/vs/workbench/contrib/chat/browser/actions/chatActions.ts
+++ b/src/vs/workbench/contrib/chat/browser/actions/chatActions.ts
@@ -158,7 +158,8 @@ class ChatHistoryAction extends Action2 {
 		picker.items = getPicks();
 		store.add(picker.onDidTriggerItemButton(context => {
 			if (context.button === openInEditorButton) {
-				editorService.openEditor({ resource: ChatEditorInput.getNewEditorUri(), options: <IChatEditorOptions>{ target: { sessionId: context.item.chat.sessionId }, pinned: true } }, ACTIVE_GROUP);
+				const options: IChatEditorOptions = { target: { sessionId: context.item.chat.sessionId }, pinned: true };
+				editorService.openEditor({ resource: ChatEditorInput.getNewEditorUri(), options }, ACTIVE_GROUP);
 				picker.hide();
 			} else if (context.button === deleteButton) {
 				chatService.removeHistoryEntry(context.item.chat.sessionId);
diff --git a/src/vs/workbench/contrib/chat/browser/actions/chatImportExport.ts b/src/vs/workbench/contrib/chat/browser/actions/chatImportExport.ts
index b4d1afffad32a..977cf2f7a1493 100644
--- a/src/vs/workbench/contrib/chat/browser/actions/chatImportExport.ts
+++ b/src/vs/workbench/contrib/chat/browser/actions/chatImportExport.ts
@@ -96,7 +96,8 @@ export function registerChatExportActions() {
 					throw new Error('Invalid chat session data');
 				}
 
-				await editorService.openEditor({ resource: ChatEditorInput.getNewEditorUri(), options: { target: { data }, pinned: true } as IChatEditorOptions });
+				const options: IChatEditorOptions = { target: { data }, pinned: true };
+				await editorService.openEditor({ resource: ChatEditorInput.getNewEditorUri(), options });
 			} catch (err) {
 				throw err;
 			}
diff --git a/src/vs/workbench/contrib/chat/browser/actions/chatMoveActions.ts b/src/vs/workbench/contrib/chat/browser/actions/chatMoveActions.ts
index d04e49d62188c..0f960b81e71eb 100644
--- a/src/vs/workbench/contrib/chat/browser/actions/chatMoveActions.ts
+++ b/src/vs/workbench/contrib/chat/browser/actions/chatMoveActions.ts
@@ -96,7 +96,7 @@ async function executeMoveToAction(accessor: ServicesAccessor, moveTo: MoveToNew
 
 	const widget = chatView?.widget ?? widgetService.lastFocusedWidget;
 	if (!widget || !('viewId' in widget.viewContext)) {
-		await editorService.openEditor({ resource: ChatEditorInput.getNewEditorUri(), options: <IChatEditorOptions>{ pinned: true } }, moveTo === MoveToNewLocation.Window ? AUX_WINDOW_GROUP : ACTIVE_GROUP);
+		await editorService.openEditor({ resource: ChatEditorInput.getNewEditorUri(), options: { pinned: true } }, moveTo === MoveToNewLocation.Window ? AUX_WINDOW_GROUP : ACTIVE_GROUP);
 		return;
 	}
 
@@ -109,7 +109,8 @@ async function executeMoveToAction(accessor: ServicesAccessor, moveTo: MoveToNew
 	const viewState = widget.getViewState();
 	widget.clear();
 
-	await editorService.openEditor({ resource: ChatEditorInput.getNewEditorUri(), options: <IChatEditorOptions>{ target: { sessionId }, pinned: true, viewState: viewState } }, moveTo === MoveToNewLocation.Window ? AUX_WINDOW_GROUP : ACTIVE_GROUP);
+	const options: IChatEditorOptions = { target: { sessionId }, pinned: true, viewState: viewState };
+	await editorService.openEditor({ resource: ChatEditorInput.getNewEditorUri(), options }, moveTo === MoveToNewLocation.Window ? AUX_WINDOW_GROUP : ACTIVE_GROUP);
 }
 
 async function moveToSidebar(accessor: ServicesAccessor): Promise<void> {
diff --git a/src/vs/workbench/contrib/chat/browser/contrib/chatDynamicVariables.ts b/src/vs/workbench/contrib/chat/browser/contrib/chatDynamicVariables.ts
index 85b3f5d5df40f..a81f88f9367c4 100644
--- a/src/vs/workbench/contrib/chat/browser/contrib/chatDynamicVariables.ts
+++ b/src/vs/workbench/contrib/chat/browser/contrib/chatDynamicVariables.ts
@@ -99,18 +99,18 @@ export class ChatDynamicVariableModel extends Disposable implements IChatWidgetC
 	}
 
 	private updateDecorations(): void {
-		this.widget.inputEditor.setDecorationsByType('chat', dynamicVariableDecorationType, this._variables.map(r => (<IDecorationOptions>{
+		this.widget.inputEditor.setDecorationsByType('chat', dynamicVariableDecorationType, this._variables.map((r): IDecorationOptions => ({
 			range: r.range,
 			hoverMessage: this.getHoverForReference(r)
 		})));
 	}
 
-	private getHoverForReference(ref: IDynamicVariable): string | IMarkdownString {
+	private getHoverForReference(ref: IDynamicVariable): IMarkdownString | undefined {
 		const value = ref.data;
 		if (URI.isUri(value)) {
 			return new MarkdownString(this.labelService.getUriLabel(value, { relative: true }));
 		} else {
-			return (value as any).toString();
+			return undefined;
 		}
 	}
 }
@@ -162,11 +162,10 @@ export class SelectAndInsertFileAction extends Action2 {
 		// This of course assumes that the `files` variable has the behavior that it searches
 		// through files in the workspace.
 		if (chatVariablesService.hasVariable(SelectAndInsertFileAction.Name)) {
-			options = {
-				providerOptions: <AnythingQuickAccessProviderRunOptions>{
-					additionPicks: [SelectAndInsertFileAction.Item, { type: 'separator' }]
-				},
+			const providerOptions: AnythingQuickAccessProviderRunOptions = {
+				additionPicks: [SelectAndInsertFileAction.Item, { type: 'separator' }]
 			};
+			options = { providerOptions };
 		}
 		// TODO: have dedicated UX for this instead of using the quick access picker
 		const picks = await quickInputService.quickAccess.pick('', options);
diff --git a/src/vs/workbench/contrib/chat/common/chatModel.ts b/src/vs/workbench/contrib/chat/common/chatModel.ts
index 1d2cc91f2fb06..4eb2b9f3816b5 100644
--- a/src/vs/workbench/contrib/chat/common/chatModel.ts
+++ b/src/vs/workbench/contrib/chat/common/chatModel.ts
@@ -771,6 +771,7 @@ export class ChatModel extends Disposable implements IChatModel {
 
 					// Port entries from old format
 					const result = 'responseErrorDetails' in raw ?
+						// eslint-disable-next-line local/code-no-dangerous-type-assertions
 						{ errorDetails: raw.responseErrorDetails } as IChatAgentResult : raw.result;
 					request.response = new ChatResponseModel(raw.response ?? [new MarkdownString(raw.response)], this, agent, raw.slashCommand, request.id, true, raw.isCanceled, raw.vote, result, raw.followups);
 					if (raw.usedContext) { // @ulugbekna: if this's a new vscode sessions, doc versions are incorrect anyway?