Webpack handles sourcemaps, and one of us, gajus, has already integrated it. Prepack should be just another stage in the build pipeline. Having said that, ther

Webpack handles sourcemaps, and one of us, gajus, has already integrated it. Prepack should be just another stage in the build pipeline. Having said that, there appears to be a sourceMaps flag in the Prepack source: https://github.com/facebook/prepack/blob/57cc59c07d164e4827c24637af9c1002b0c4a3c8/src/prepack-cli.js#L81-L87 https://github.com/facebook/prepack/blob/57cc59c07d164e4827c... I will be attempting to use this as a simple black box, relying on Webpack for features that are only tangentially related to this new optimization stage in my build stack.