Standards proposal would allow annotations to be checked by external type checkers like TypeScript but treated as comments by the JavaScript engine. Microsoft is backing a proposal to bring optional ...

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This proposal aims to enable developers to add type annotations to their JavaScript code, allowing those annotations to be checked by a type checker that is external to JavaScript. At runtime, a ...

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.