config-overrides.js

const {injectBabelPlugin} = require('react-app-rewired');
const rewireLess = require('react-app-rewire-less');

// eslint-disable-next-line
module.exports = function override(config, env) {
  config = injectBabelPlugin(
    ['import', {libraryName: 'antd', style: true}],
    config,
  );

  config = rewireLess(config, env);

  return config;
};