zigbee2mqtt/babel.config.js

module.exports = {
    presets: [
        ['@babel/preset-env', {targets: {node: 'current'}}],
        '@babel/preset-typescript',
    ],
    assumptions: {setPublicClassFields: true},
    plugins: [
        ['@babel/plugin-proposal-decorators', {'legacy': true}],
        ['@babel/plugin-proposal-class-properties'],
    ],
};