injectCaller.js

module.exports = function injectCaller(opts, target) {
  return Object.assign({}, opts, {
    caller: Object.assign(
      {
        name: "babel-loader",

        // Provide plugins with insight into webpack target.
        // https://github.com/babel/babel-loader/issues/787
        target,

        // Webpack >= 2 supports ESM and dynamic import.
        supportsStaticESM: true,
        supportsDynamicImport: true,

        // Webpack 5 supports TLA behind a flag. We enable it by default
        // for Babel, and then webpack will throw an error if the experimental
        // flag isn't enabled.
        supportsTopLevelAwait: true,
      },
      opts.caller,
    ),
  });
};