How to disable new JSX transform and use old JSX transform

[utenma]

I created a new react project, it installed the new react 17.0.1 and react scripts 4.0, now i cannot use emotion, because throws error

pragma and pragmaFrag cannot be set when runtime is automatic.
> 1 | /** @jsx jsx */

on this line

// this comment tells babel to convert jsx to calls to a function called jsx instead of React.createElement
/** @jsx jsx */
import { css, jsx } from '@emotion/core'

i know this is configured in babel so should i eject or is there a simpler way to disable just this new transform, i mean, if not it will break on projects using pragma like emotion

i mean like a USE_CLASSIC_RUNTIME boolean option on the .env file, that sets

 ["@babel/preset-react", {
      "runtime": "automatic"
    }]

to

["@babel/preset-react", {
      "runtime": "classic"
    }]

UPDATE

just ejected and seems that this options is already present

so just add DISABLE_NEW_JSX_TRANSFORM = true on your .env file

good luck!!

[utenma]

this was merged on #9861
i going to close this question