Skip to content

Navigation Menu

Explore
By company size
By use case
By industry
View all solutions
Topics
- AI
- DevOps
- Security
- Software Development
- View all
Explore
- GitHub Sponsors
  Fund open source developers
- The ReadME Project
  GitHub community articles
Repositories
- Enterprise platform
  AI-powered developer platform
Available add-ons
Pricing

Search code, repositories, users, issues, pull requests...

Search

Clear

Search syntax tips

Provide feedback

We read every piece of feedback, and take your input very seriously.

Include my email address so I can be contacted

Saved searches

Use saved searches to filter your results more quickly

Name

Query

To see all available qualifiers, see our documentation.

You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session.

Dismiss alert

microsoft / TypeScript Public

Notifications You must be signed in to change notification settings
Fork 12.6k
Star 102k

Code
Issues 5k+
Pull requests 528
Actions
Projects 1
Wiki
Security
Insights

Additional navigation options

Code
Issues
Pull requests
Actions
Projects
Wiki
Security
Insights

Narrow string and number types in literal equality checks#11587

Merged

ahejlsberg merged 5 commits intomastermicrosoft/TypeScript:masterfrom narrowStringAndNumbermicrosoft/TypeScript:narrowStringAndNumberCopy head branch name to clipboard

Oct 13, 2016

+551-22

Conversation Commits5 (5)Checks Files changed

Commits

Commits on Oct 12, 2016

Narrow string and number types in equality checks and switch cases
ahejlsberg
committed
Fix bug in scanner
ahejlsberg
committed

Commits on Oct 13, 2016

Properly narrow union types containing string and number
ahejlsberg
committed
Accept new baselines
ahejlsberg
committed
Add tests
ahejlsberg
committed

Footer

© 2025 GitHub, Inc.

Footer navigation

Terms
Privacy
Security
Status
Docs
Contact

You can’t perform that action at this time.