.babelrc.js

'use strict';

module.exports = {
    parserOpts: {
        strictMode: true,
    },
    plugins: ['@emotion'],
    presets: [
        ['@babel/preset-env', {
            // Set to `true` to show which transforms will be run
            // during the build
            debug: false,
        }],
        [
            '@babel/preset-typescript',
            {
                allowDeclareFields: true,
            },
        ],
        [
            '@babel/preset-react',
            {
                runtime: 'automatic',
                importSource: '@emotion/react',
            },
        ],
    ],
};