/** @type {import('@babel/core').ConfigFunction} */
module.exports = api => {
  if (!api.env("test")) {
    return {};
  }

  return {
    presets: [],
    plugins: [
      ["@babel/plugin-transform-typescript", { allowDeclareFields: true }],
      ["@babel/plugin-proposal-decorators", { version: "legacy" }],
      "@babel/plugin-transform-modules-commonjs",
      "babel-plugin-macros",
    ],
  };
};