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Add typings exports#1623

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tdraier wants to merge 2 commits intomodelcontextprotocol:v1.xfrom
dust-tt:typings-exports
Open

Add typings exports#1623
tdraier wants to merge 2 commits intomodelcontextprotocol:v1.xfrom
dust-tt:typings-exports

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@tdraier
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@tdraier tdraier commented Mar 4, 2026

Motivation and Context

TypeScript projects using moduleResolution: "bundler" (or "node16") cannot resolve type declarations for subpath imports like @modelcontextprotocol/sdk/types or @modelcontextprotocol/sdk/shared/transport. This is because the exports map lacks "types" conditions, so TypeScript doesn't know where to find .d.ts files for these subpaths.

How Has This Been Tested?

Verified that a TypeScript project with moduleResolution: "bundler" can resolve @modelcontextprotocol/sdk/types, @modelcontextprotocol/sdk/shared/transport, and other subpath imports without needing tsconfig.json paths workarounds.

Breaking Changes

None. Adding "types" conditions is purely additive — it enables TypeScript to resolve types that previously required manual paths configuration. Existing setups using typesVersions or explicit paths will continue to work.

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)
  • Documentation update

Checklist

  • I have read the MCP Documentation
  • My code follows the repository's style guidelines
  • New and existing tests pass locally
  • I have added appropriate error handling
  • I have added or updated documentation as needed

Additional context

The "types" condition is the modern replacement for "typesVersions" and is recommended by TypeScript for packages using exports. Only the named subpaths (., ./client, ./server) and the catch-all (./) needed updating — the ./validation/ and ./experimental/* entries are covered by the ./* catch-all.

@tdraier tdraier requested a review from a team as a code owner March 4, 2026 11:13
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changeset-bot bot commented Mar 4, 2026

🦋 Changeset detected

Latest commit: b80704d

The changes in this PR will be included in the next version bump.

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

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pkg-pr-new bot commented Mar 4, 2026

Open in StackBlitz

npm i https://pkg.pr.new/@modelcontextprotocol/sdk@1623

commit: eaf514d

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