@babel/plugin-transform-runtime/src/get-runtime-path/browser.ts

Externalise references to helpers and builtins, automatically polyfilling your code without polluting globals

export default function (
  moduleName: string,
  dirname: string,
  absoluteRuntime: string | boolean,
) {
  if (absoluteRuntime === false) return moduleName;

  resolveFSPath();
}

export function resolveFSPath() {
  throw new Error(
    "The 'absoluteRuntime' option is not supported when using @babel/standalone.",
  );
}