Adding new error types and exporting them from module

src/approval/ApprovalController.ts

@@ -4,6 +4,7 @@ import { nanoid } from 'nanoid';
 
 import { BaseController, Json } from '../BaseControllerV2';
 import type { RestrictedControllerMessenger } from '../ControllerMessenger';
+import { ApprovalRequestNotFoundError } from './errors';
 
 const controllerName = 'ApprovalController';
 
@@ -568,7 +569,7 @@ export class ApprovalController extends BaseController<
   private _deleteApprovalAndGetCallbacks(id: string): ApprovalCallbacks {
     const callbacks = this._approvals.get(id);
     if (!callbacks) {
-      throw new Error(`Approval request with id '${id}' not found.`);
+      throw new ApprovalRequestNotFoundError(id);
     }
 
     this._delete(id);

src/approval/errors.ts

@@ -0,0 +1,5 @@
+export class ApprovalRequestNotFoundError extends Error {
+  constructor(id: string) {
+    super(`Approval request with id '${id}' not found.`);
+  }
+}

src/approval/index.ts

@@ -0,0 +1,2 @@
+export * from './ApprovalController';
+export * from './errors';

src/index.ts

@@ -4,7 +4,7 @@ import { formatIconUrlWithProxy } from './assets/assetsUtil';
 
 export * from './assets/AccountTrackerController';
 export * from './user/AddressBookController';
-export * from './approval/ApprovalController';
+export * from './approval';
 export * from './assets/AssetsContractController';
 export * from './BaseController';
 export {

src/permissions/index.ts

@@ -1,4 +1,5 @@
 export * from './Caveat';
+export * from './errors';
 export * from './Permission';
 export * from './PermissionController';
 export * from './utils';