Show error message when show scope visualizer is called without arguments

packages/common/src/cursorlessCommandIds.ts

@@ -95,6 +95,9 @@ export const cursorlessCommandDescriptions: Record<
   ["cursorless.showInstallationDependencies"]: new VisibleCommand(
     "Show installation dependencies",
   ),
+  // showScopeVisualizer can't be called from the command palatte because it
+  // requires an argument, but it still needs to be visible or the scope buttons
+  // will be disabled in the sidebar
   ["cursorless.showScopeVisualizer"]: new VisibleCommand(
     "Show the scope visualizer",
   ),

packages/common/src/util/disposableFrom.ts

@@ -9,9 +9,9 @@ import type { Disposable } from "../ide/types/ide.types";
 export function disposableFrom(...disposables: Disposable[]): Disposable {
   return {
     dispose(): void {
-      disposables.forEach(({ dispose }) => {
+      disposables.forEach((disposable) => {
         try {
-          dispose();
+          disposable.dispose();
         } catch (e) {
           // just log, but don't throw; some of the VSCode disposables misbehave,
           // and we don't want that to prevent us from disposing the rest of the

packages/cursorless-vscode/src/registerCommands.ts

@@ -1,6 +1,7 @@
 import type {
   CommandHistoryStorage,
   CursorlessCommandId,
+  ScopeType,
 } from "@cursorless/common";
 import { CURSORLESS_COMMAND_ID } from "@cursorless/common";
 import {
@@ -18,7 +19,10 @@ import type {
 } from "@cursorless/test-case-recorder";
 import * as vscode from "vscode";
 import type { InstallationDependencies } from "./InstallationDependencies";
-import type { ScopeVisualizer } from "./ScopeVisualizerCommandApi";
+import type {
+  ScopeVisualizer,
+  VisualizationType,
+} from "./ScopeVisualizerCommandApi";
 import type { VscodeSnippets } from "./VscodeSnippets";
 import type { VscodeTutorial } from "./VscodeTutorial";
 import {
@@ -102,7 +106,15 @@ export function registerCommands(
     ["cursorless.recomputeDecorationStyles"]: hats.recomputeDecorationStyles,
 
     // Scope visualizer
-    ["cursorless.showScopeVisualizer"]: scopeVisualizer.start,
+    ["cursorless.showScopeVisualizer"]: (
+      scopeType?: ScopeType,
+      visualizationType?: VisualizationType,
+    ) => {
+      if (scopeType == null || visualizationType == null) {
+        throw new Error("Missing arguments. Only for internal use.");
+      }
+      scopeVisualizer.start(scopeType, visualizationType);
+    },
     ["cursorless.hideScopeVisualizer"]: scopeVisualizer.stop,
     ["cursorless.scopeVisualizer.openUrl"]:
       showScopeVisualizerItemDocumentation,