module.exports.options = ({ latestBuild }) => ({
  presets: [
    !latestBuild && [require("@babel/preset-env").default, { modules: false }],
    require("@babel/preset-typescript").default,
  ].filter(Boolean),
  plugins: [
    // Part of ES2018. Converts {...a, b: 2} to Object.assign({}, a, {b: 2})
    [
      "@babel/plugin-proposal-object-rest-spread",
      { loose: true, useBuiltIns: true },
    ],
    // Only support the syntax, Webpack will handle it.
    "@babel/syntax-dynamic-import",
    "@babel/plugin-proposal-optional-chaining",
    "@babel/plugin-proposal-nullish-coalescing-operator",
    [
      require("@babel/plugin-proposal-decorators").default,
      { decoratorsBeforeExport: true },
    ],
    [
      require("@babel/plugin-proposal-class-properties").default,
      { loose: true },
    ],
  ],
});

// Are already ES5, cause warnings when babelified.
module.exports.exclude = [
  require.resolve("@mdi/js/mdi.js"),
  require.resolve("hls.js"),
];