Deno 1.16, the latest version of the JavaScript/TypeScript runtime, features support for a new JSX transform and WebAssembly reference types.

The newly supported JSX transform, which is featured in the React 17 JavaScript UI library, both improves the JSX transform API and allows automatic importing of the JSX runtime library. JSX is a syntax extension for JavaScript that is often used to describe what the UI should look like.

Deno 1.16 also adds an experimental API for listening to operating system signals. The new unstable API supersedes the existing


API, which also was unstable. Other new features and improvements in Deno 1.16:

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