readme.md

TypeScript 5 news

Here are examples to discover new features of Typescript 5 created on Rc version. Since currently the peer karma-typescript is not compatible peer dependency use npm install -force. VS Code is configured to use the same version as in node_modules. You can switch the VS Code typescript version to see, which lines you are unable to compile. There is no meaning of included unit tests, except debugging.

• See https://devblogs.microsoft.com/typescript/announcing-typescript-5-0-rc/

Examples

• Const type parameters
• All Enums are union types
• Export "type *"
  • https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-8.html
• JSDoc @satisfies
• JSDoc @overload
• Decorators
  • https://javascript.plainenglish.io/ts-5-0-beta-new-decorators-are-here-5b13a383e4ad
  • You can play with the decorators before typescript-karma is available https://www.typescriptlang.org/play?experimentalDecorators=false&emitDecoratorMetadata=false&jsx=0&module=1&ts=5.1.0-dev.20230307
  • https://github.com/tc39/proposal-decorators
• Performance and compiler switches see release notes