copilot-swe-agent[bot] 7f169c18f2 Fix compiler logic to check for wildcard correctly
- checker.ts: Check for wildcard before choosing error message
- programDiagnostics.ts: Check for wildcard before returning early
- watch.ts: Check for wildcard to choose correct message
- jsTyping.ts: Use optional chaining for wildcard check
- tscWatch tests: Use wildcard for tests that dynamically install types

These functions should only show "add to types" messages when wildcard is NOT present.

Co-authored-by: RyanCavanaugh <6685088+RyanCavanaugh@users.noreply.github.com>
2026-01-27 19:04:03 +00:00

TypeScript

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TypeScript is a language for application-scale JavaScript. TypeScript adds optional types to JavaScript that support tools for large-scale JavaScript applications for any browser, for any host, on any OS. TypeScript compiles to readable, standards-based JavaScript. Try it out at the playground, and stay up to date via our blog and Twitter account.

Find others who are using TypeScript at our community page.

Installing

For the latest stable version:

npm install -D typescript

For our nightly builds:

npm install -D typescript@next

Contribute

There are many ways to contribute to TypeScript.

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.

Documentation

Roadmap

For details on our planned features and future direction, please refer to our roadmap.

Description
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
Readme 5.3 GiB
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