It appears somebody has made a standalone JSX transform that will operate directly on files if you desire, and output to string. https://github.com/alexmingoia

It appears somebody has made a standalone JSX transform that will operate directly on files if you desire, and output to string. https://github.com/alexmingoia/jsx-transform/ https://github.com/alexmingoia/jsx-transform/ I think it would not be too much work to wrap it in a script to let you pipe into/out of other build steps.