Say goodbye to source maps and compilation delays. By treating types as whitespace, modern runtimes are unlocking a “no-build” TypeScript that keeps stack traces accurate and workflows clean.

Microsoft released TypeScript 6.0 on March 23, the last version built on the original JavaScript codebase, with three post-RC changes and a wave of deprecations designed to ready codebases for the ...

That test acts as a type guard to ensure that, within the test's code block, you have the right object. In addition, with TypeScript 2.0, switch statements can act as type guards. As an example, in ...

Microsoft's open-source programming language TypeScript – the alter ego of JavaScript but with a type system – turns 10 years old this December. It's grown to become a go-to language for building apps ...

Next TypeScript release, due February 25, will support a limited form of checking against conditional and indexed acces types in return statements. Microsoft has moved TypeScript 5.8 into the beta ...