Auto-import React for JSX

[AleksandrHovhannisyan]

esbuild supports options that allow you to automatically import React for JSX files so that you don't have to do import React from 'react' in every file. Is there currently a way to do that with this plugin, or will I need to manually import React?

[httpete]

I am hitting exactly this, if I had access to the inject: property from esbuild I would be totally set.

[kelly-tock]

am I reading the esbuild docs correctly, in the transform api you can't inject?

https://esbuild.github.io/api/#transform-api

[jereklas]

I think this could be resolved fairly easily if the internals of the library used build instead of transform. Is anyone even actively maintaining this library anymore?

[kelly-tock]

I don't think you'd want to use build actually, as jest transforms it in memory and executes it, which I think would be faster than emitting actual files. I got around this issue in a bit of a weird way, in my setup files script for jest I set react to a global variable, so

global.react = require('react');

the rest of my issues are things specific to esbuild and mocks.

[jereklas]

There's a write option on the build function that keeps everything in memory and doesn't write to file.

[kelly-tock]

ah, then that does sound good.

[daniloab]

related https://github.com/aelbore/esbuild-jest/issues/70