What is the jsx attribute in TypeScript types?

[jaswrks]

preact/src/index.d.ts

Line 57 in e24fdad

jsx?: boolean | undefined;

Hi. May I please get some help understanding what this attribute is and where it comes from? I can't seem to find anything in the preact codebase that implements this, or considers it. Is this still relevant?

[andrewiggins]

Hmm I forget. I think it was added cuz some poplar library (maybe a styling library?) used it. In retrospect, the library should probably extend these types instead of us hardcoding them here.