babel.prod.config.js

// build config for production (on publish)
module.exports = {
  'presets': ['@babel/preset-env', '@babel/preset-react'],
  'plugins': [
    '@babel/plugin-proposal-nullish-coalescing-operator',
    '@babel/plugin-proposal-optional-chaining',
    'inline-json-import',
  ],
  'ignore': ['**/*.usfm.js'],
};