[reactjs] Support for the experimental syntax 'classProperties' isn't currently enabled

  • Install the plugin-proposal-class-properties npm install @babel/plugin-proposal-class-properties --save-dev

  • Update your webpack.config.js by adding 'plugins': ['@babel/plugin-proposal-class-properties']}]

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Examples related to webpack

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Examples related to babeljs

Support for the experimental syntax 'classProperties' isn't currently enabled Export multiple classes in ES6 modules Getting Unexpected Token Export 'import' and 'export' may only appear at the top level Dynamically add child components in React Call async/await functions in parallel Correct way to import lodash Babel command not found ES6 exporting/importing in index file "unexpected token import" in Nodejs5 and babel?