accounts-frontend/babel.config.js

/* eslint-env node */
module.exports = {
    presets: [
        [
            '@babel/preset-typescript',
            {
                allowDeclareFields: true,
            },
        ],
        '@babel/preset-react',
        [
            '@babel/preset-env',
            {
                ignoreBrowserslistConfig: true,
                targets: {
                    node: true,
                },
                modules: 'commonjs',
            },
        ],
    ],
    plugins: [
        '@babel/plugin-syntax-dynamic-import',
        '@babel/plugin-proposal-function-bind',
        '@babel/plugin-proposal-class-properties',
        [
            '@babel/plugin-transform-runtime',
            {
                corejs: 3,
            },
        ],
        ['react-intl', { messagesDir: './build/messages/' }],
    ],
    env: {
        webpack: {
            plugins: ['react-hot-loader/babel'],
            presets: [
                [
                    '@babel/preset-env',
                    {
                        ignoreBrowserslistConfig: false,
                        modules: false,
                        useBuiltIns: 'usage', // or "entry"
                        corejs: 3,
                    },
                ],
            ],
        },
    },
};