Alexis Cheron 8b35c1300e
The error "Object is possibly null or undefined" is ambiguous. (#49797)
* added object name to TS2571, 2531, 2532 and 2533

* updated localized diagnostic messages

* updated baseline to fit diagnostic message change

* Revert "updated localized diagnostic messages"

This reverts commit 738cf094bdb4a1f07d74f90747afe00366549300.

* specialized the error to EntityNameExpression

* updated baseline to fit new changes

* added multiline undefined access test

* added TS18049 - value cannot be used here

* adjusted baseline

* corrected a small linting issue

* Update error numbers after merge from main

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
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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 -g typescript

For our nightly builds:

npm install -g 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
2025-07-30 13:28:01 -05:00
Languages
TypeScript 97.9%
jsonc 2%
JavaScript 0.1%