First you need to run npm install --save-dev @babel/preset-react. Support for the experimental syntax 'classProperties' isn't currently enabled. 1.3 Solution 3 : Add the command. rails6 Support for the experimental syntax 'jsx' isn't currently ... JavaScript : Support for the experimental syntax 'jsx' isn't currently enabled [ Gift : Animated Search Engine : https://bit.ly/AnimSearch ] JavaScript : Su. plugin - React native project 2, Failed to compile, Error: 'Support for ... React Automatic Runtime importSource. Updating babel-eslint to @babel/eslint-parser for React apps Insights Support for the experimental syntax 'jsx' isn't currently enabled #2767 Answered by Pavel1114 maxcww asked this question in Q&A maxcww on Oct 7, 2020 Hello, I have a react project setup with create-react-app. Though the JSX spec allows this, it is disabled by default since React's JSX does not currently have support for it. support for the experimental syntax 'jsx' isn't currently enabled jest ... Example 2: rails webpack support for the experimental syntax 'jsx' isn't currently enabled. Yet overall, the RC version of React 18 feels stable enough to be used in PROD. It looks like my babel.config.js file is being ignored! 1 How to Fix SyntaxError: Support for the experimental syntax 'jsx' isn't currently enabled Error? First, switch out the Babel eslint plugin by removing babel-eslint and installing @babel/eslint-parser: npm uninstall babel-eslint npm install @babel/eslint-parser -D. If you're not running npm 7 (Node15) you will also need to add @babel/core, which is a peer dependency of @babel/eslint-parser. { "targets": "> 0.25%" } means we want to support browsers with more than 0.25% market share.