full bundle->cjs->esm works now! some modules are dynamically loaded from other chunk files because Polytrack’s author enabled source splitting, so i restructured the driver code to support multi-bundle recursive module/chunk loading. also, i originally had the converter unwrap umd wrappers, but i realized that’s completely pointless because the entire module will get spliced out by npm detection, so it just marks such modules as “complex.” unbundling wise, the only thing left to write is npm package detection.