Deno Joins TC39

Re:Deno Joins TC39 by lucacasonato on Monday December 13, 2021 @09:26AM (#29539831)

Yes, this would be great, and it will probably happen eventually. This is something we want to work on soon - expect something in the coming weeks.

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Re:Deno Joins TC39 by ducaale on Monday December 13, 2021 @11:22AM (#29540987)

Since TS/Deno has native support for JSX syntax, do you think Browsers will eventually support it as well?

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Re:Deno Joins TC39 by lucacasonato on Monday December 13, 2021 @12:06PM (#29541549)

No, I don't think so. JSX is too proprietary and not specified well enough. It is also rather ambiguous.

If you want a "no compile" JSX:

```jsx

const x = <div color="red">hello</div>;

// is the same as

const x = h("div", { color: "red" }, "hello");

```

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Re:Deno Joins TC39 by eyelidlessness on Monday December 13, 2021 @12:48PM (#29542102)

This is more true as a mental model/to the type system, but slightly more complicated when compiled.

First, there’s the “new JSX transform”, which involves auto-imports, has a different function signature, and defines fallback behavior for certain circumstances.

Second, JSX is only specified as a syntax extension. Some implementations—like SolidJS and its underlying dom-expressions compiler—don’t compile to hyperscript at all.

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