LibreChat/client/babel.config.cjs

module.exports = {
  presets: [
    ['@babel/preset-env', { 'targets': { 'node': 'current' } }], //compiling ES2015+ syntax
    ['@babel/preset-react', { runtime: 'automatic' }],
    '@babel/preset-typescript',
  ],
  /*
      Babel's code transformations are enabled by applying plugins (or presets) to your configuration file.
  */
  plugins: [
    '@babel/plugin-transform-runtime',
    'babel-plugin-transform-import-meta',
    'babel-plugin-transform-vite-meta-env',
    'babel-plugin-replace-ts-export-assignment',
    [
      'babel-plugin-root-import',
      {
        'rootPathPrefix': '~/',
        'rootPathSuffix': './src',
      },
    ],
  ],
};