[extensions] Add disable command (#7001)

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

packages/cli/src/commands/extensions.tsx

@@ -9,6 +9,7 @@ import { installCommand } from './extensions/install.js';
 import { uninstallCommand } from './extensions/uninstall.js';
 import { listCommand } from './extensions/list.js';
 import { updateCommand } from './extensions/update.js';
+import { disableCommand } from './extensions/disable.js';
 
 export const extensionsCommand: CommandModule = {
   command: 'extensions <command>',
@@ -19,6 +20,7 @@ export const extensionsCommand: CommandModule = {
       .command(uninstallCommand)
       .command(listCommand)
       .command(updateCommand)
+      .command(disableCommand)
       .demandCommand(1, 'You need at least one command before continuing.')
       .version(false),
   handler: () => {

packages/cli/src/commands/extensions/disable.ts

@@ -0,0 +1,51 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { type CommandModule } from 'yargs';
+import { disableExtension } from '../../config/extension.js';
+import { SettingScope } from '../../config/settings.js';
+import { getErrorMessage } from '../../utils/errors.js';
+
+interface DisableArgs {
+  name: string;
+  scope: SettingScope;
+}
+
+export async function handleDisable(args: DisableArgs) {
+  try {
+    disableExtension(args.name, args.scope);
+    console.log(
+      `Extension "${args.name}" successfully disabled for scope "${args.scope}".`,
+    );
+  } catch (error) {
+    console.error(getErrorMessage(error));
+    process.exit(1);
+  }
+}
+
+export const disableCommand: CommandModule = {
+  command: 'disable [--scope] <name>',
+  describe: 'Disables an extension.',
+  builder: (yargs) =>
+    yargs
+      .positional('name', {
+        describe: 'The name of the extension to disable.',
+        type: 'string',
+      })
+      .option('scope', {
+        describe: 'The scope to disable the extenison in.',
+        type: 'string',
+        default: SettingScope.User,
+        choices: [SettingScope.User, SettingScope.Workspace],
+      })
+      .check((_argv) => true),
+  handler: async (argv) => {
+    await handleDisable({
+      name: argv['name'] as string,
+      scope: argv['scope'] as SettingScope,
+    });
+  },
+};

packages/cli/src/commands/extensions/install.ts

@@ -10,6 +10,8 @@ import {
   type ExtensionInstallMetadata,
 } from '../../config/extension.js';
 
+import { getErrorMessage } from '../../utils/errors.js';
+
 interface InstallArgs {
   source?: string;
   path?: string;
@@ -26,7 +28,7 @@ export async function handleInstall(args: InstallArgs) {
       `Extension "${extensionName}" installed successfully and enabled.`,
     );
   } catch (error) {
-    console.error((error as Error).message);
+    console.error(getErrorMessage(error));
     process.exit(1);
   }
 }

packages/cli/src/commands/extensions/list.ts

@@ -6,6 +6,7 @@
 
 import type { CommandModule } from 'yargs';
 import { loadUserExtensions, toOutputString } from '../../config/extension.js';
+import { getErrorMessage } from '../../utils/errors.js';
 
 export async function handleList() {
   try {
@@ -20,7 +21,7 @@ export async function handleList() {
         .join('\n\n'),
     );
   } catch (error) {
-    console.error((error as Error).message);
+    console.error(getErrorMessage(error));
     process.exit(1);
   }
 }

packages/cli/src/commands/extensions/uninstall.ts

@@ -6,6 +6,7 @@
 
 import type { CommandModule } from 'yargs';
 import { uninstallExtension } from '../../config/extension.js';
+import { getErrorMessage } from '../../utils/errors.js';
 
 interface UninstallArgs {
   name: string;
@@ -16,7 +17,7 @@ export async function handleUninstall(args: UninstallArgs) {
     await uninstallExtension(args.name);
     console.log(`Extension "${args.name}" successfully uninstalled.`);
   } catch (error) {
-    console.error((error as Error).message);
+    console.error(getErrorMessage(error));
     process.exit(1);
   }
 }

packages/cli/src/commands/extensions/update.ts

@@ -6,6 +6,7 @@
 
 import type { CommandModule } from 'yargs';
 import { updateExtension } from '../../config/extension.js';
+import { getErrorMessage } from '../../utils/errors.js';
 
 interface UpdateArgs {
   name: string;
@@ -23,7 +24,7 @@ export async function handleUpdate(args: UpdateArgs) {
       `Extension "${args.name}" successfully updated: ${updatedExtensionInfo.originalVersion} → ${updatedExtensionInfo.updatedVersion}.`,
     );
   } catch (error) {
-    console.error((error as Error).message);
+    console.error(getErrorMessage(error));
     process.exit(1);
   }
 }