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feat(compat): re-export StreamableHTTPServerTransport + EventStore types from /node #1904

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feat(compat): re-export StreamableHTTPServerTransport + EventStore types from /node #1904

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6f5ee9c
feat(compat): add StreamableHTTPServerTransport alias and EventStore …
felixweinberger Apr 15, 2026
55d3879
fix: use const+type alias so @deprecated survives dts bundling
felixweinberger Apr 16, 2026
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5 changes: 5 additions & 0 deletions .changeset/node-transport-v1-aliases.md
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---
'@modelcontextprotocol/node': patch
---

Add v1-compat re-exports: `StreamableHTTPServerTransport` (alias for `NodeStreamableHTTPServerTransport`) and the `EventStore` / `EventId` / `StreamId` types, so v1 imports from `@modelcontextprotocol/sdk/server/streamableHttp.js` map cleanly onto `@modelcontextprotocol/node`.
7 changes: 7 additions & 0 deletions packages/middleware/node/src/index.ts
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export * from './streamableHttp.js';

// v1-compat re-exports.
export {
/** @deprecated Use {@linkcode NodeStreamableHTTPServerTransport}. */
NodeStreamableHTTPServerTransport as StreamableHTTPServerTransport
} from './streamableHttp.js';

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Claude / Claude Code Review

@deprecated still stripped from published .d.mts — 'Fixed' resolution incomplete 

The "Fixed" resolution restored `@deprecated` only as inline JSDoc on the export *specifier* — tsdown's dts bundler still flattens that into a bare `NodeStreamableHTTPServerTransport as StreamableHTTPServerTransport` with no JSDoc (verified: `dist/index.d.mts:516`, and `grep -in deprecated dist/index.d.mts` finds only the unrelated DNS-rebinding option deprecations at 364/370/376). Consumers of the published package still get no IDE strikethrough / `no-deprecated` lint warning. Switch to the `ex
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export type { EventId, EventStore, StreamId } from '@modelcontextprotocol/server';
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@KKonstantinov KKonstantinov Apr 27, 2026

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Not sure if the direction is right - EventStore is already exported from '@modelcontextprotocol/server' and the premise of the node middleware package isn't that users should only work with it.

They should be importing both the node middleware, and the server package. In which case they already have the access readily to them from the server package.

19 changes: 19 additions & 0 deletions packages/middleware/node/test/compat.test.ts
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import { describe, expect, expectTypeOf, it } from 'vitest';

import { NodeStreamableHTTPServerTransport, StreamableHTTPServerTransport } from '../src/index.js';
import type { EventId, EventStore, StreamId } from '../src/index.js';

describe('v1 compat exports from @modelcontextprotocol/node', () => {
it('StreamableHTTPServerTransport aliases NodeStreamableHTTPServerTransport', () => {
expect(StreamableHTTPServerTransport).toBe(NodeStreamableHTTPServerTransport);
expectTypeOf<StreamableHTTPServerTransport>().toEqualTypeOf<NodeStreamableHTTPServerTransport>();
});

it('re-exports EventStore / EventId / StreamId types', () => {
// Type-level assertions: these compile only if the types are exported.
expectTypeOf<EventId>().toBeString();
expectTypeOf<StreamId>().toBeString();
expectTypeOf<EventStore>().toHaveProperty('storeEvent');
expectTypeOf<EventStore>().toHaveProperty('replayEventsAfter');
});
});
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