fix: Update package exports to use src directory for ESM and CommonJS…

[saharis9988]

… modules after tests migration

This PR updates the exports fields in the root package.json to match the new build output structure after the tests migration (#1220).

Motivation and Context

Since the build artifacts are now generated under dist/{cjs,esm}/src instead of directly under dist/{cjs,esm}, the exports paths must be adjusted accordingly. Without this change, all public consumer import paths resolve incorrectly.

How Has This Been Tested?

Breaking Changes

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

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/sdk@1239

commit: 84928e6

[KKonstantinov]

Hi @saharis9988 , thanks for identifying this. Please check #1240 - it should resolve this without changing the paths.

[saharis9988]

Yes, I really didn’t understand why the tests were added to the tsconfig.json.
I assumed there was a good reason for it if you did so. :)
But if we want to keep the current structure, then this is the way..

[KKonstantinov]

It's rather accidental 😅 But thanks for catching that.

Merging the other PR so we don't accidentally publish. However, we will still have to do something so /test does not light up on the describes etc. not recognizing vitest being there.