jsx: preserve in deno.json throws and error

[maor-benami]

[dsherret]

What would preserve mean in Deno? Wouldn't the jsx syntax error once sent to the runtime?

[maor-benami]

What would preserve mean in Deno? Wouldn't the jsx syntax error once sent to the runtime?

I wanted to plug a custom jsx transform using some kind of loader plugin, but i could not manage to make it work yet.

Also, if you want to use a different jsx transform and have TypeScript be ok with it (or at least WebStorm complains about it), you need to change jsx: react in tsconfig.json to preserve (p.s. i found out that WebStorm is ok with precompile also)

[lighth7015]

What would preserve mean in Deno? Wouldn't the jsx syntax error once sent to the runtime?

The JSX preserve option is required, in order for JSX frameworks which aren't React (e.g. SolidJS, Vue JS) to function properly; it's so their own specific transpilers have a chance to process the JSX and, do whatever it is they need with it.

[marvinhagemeister]

Running JSX directly without any form of transpilation will never work because JSX is not valid JavaScript. What's being asked here is for a way to hook into Deno's transpilation process to configure custom JSX transforms like for Solid or other frameworks. This API doesn't exist in Deno at the time of this writing.

The feature request for a module loading API to hook into is being tracked here #8327 .

[lighth7015]

Or to just not perform JSX transpilation- I know it's not valid, and they know it ain't valid. But if their tooling needs the raw JSX so they can function correctly lol