refactor: remove unnecessary *Base type aliases

These were introduced in this PR but aren't needed - the base types
kept their original names (Request, Notification, Result).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: ochafik

src/types.ts

@@ -802,14 +802,6 @@ import type {
 // Re-export with original names
 export type { _Request as Request, _Notification as Notification, _Result as Result };
 
-// Backwards-compatible aliases
-/** @deprecated Use Request instead */
-export type RequestBase = _Request;
-/** @deprecated Use Notification instead */
-export type NotificationBase = _Notification;
-/** @deprecated Use Result instead */
-export type ResultBase = _Result;
-
 /* Types re-exported from generated sdk.types.ts */
 export type {
     // Union types for narrowing (Mcp prefix)

test/client/streamableHttp.test.ts

@@ -1,6 +1,6 @@
 import { StartSSEOptions, StreamableHTTPClientTransport, StreamableHTTPReconnectionOptions } from '../../src/client/streamableHttp.js';
 import { OAuthClientProvider, UnauthorizedError } from '../../src/client/auth.js';
-import { JSONRPCMessage, JSONRPCRequest, type ResultBase } from '../../src/types.js';
+import { JSONRPCMessage, JSONRPCRequest, type Result } from '../../src/types.js';
 import { InvalidClientError, InvalidGrantError, UnauthorizedClientError } from '../../src/server/auth/errors.js';
 import { type Mock, type Mocked } from 'vitest';
 
@@ -223,7 +223,7 @@ describe('StreamableHTTPClientTransport', () => {
 
         const responseMessage: JSONRPCMessage = {
             jsonrpc: '2.0',
-            result: { success: true } as ResultBase,
+            result: { success: true } as Result,
             id: 'test-id'
         };
 

test/server/mcp.test.ts

@@ -15,7 +15,6 @@ import {
     ListToolsResultSchema,
     LoggingMessageNotificationSchema,
     type Notification,
-    type NotificationBase,
     ReadResourceResultSchema,
     type TextContent,
     UrlElicitationRequiredError,