And there was Sails and any number of other attempts at this. A key strength for Rails is Ruby and a key weakness for any aspiring JS equivalent is JS and the

And there was Sails and any number of other attempts at this. A key strength for Rails is Ruby and a key weakness for any aspiring JS equivalent is JS and the JS ecosystem. If the Rails team had had to spend time adapting to 6 different alternatives to bundler, rack, and every other library they use it wouldn't be what it is today.