Add support of Promises for getComponent(s), getChildRoutes, getIndexRoute #3850
Description
It would be very useful if async methods like getComponent(s), getChildRoutes, getIndexRoute will be able to support promises, for example with https://github.com/gaearon/promise-loader route definitions could be very small and elegant:
{
getChildRoutes: require('promise?global!./path/to/route') // when called returns a promise
}Currently it does not look so good:
{
getChildRoutes: (partial, cb) => {
require('promise?global,route-feed!./routes/feed')().then(cb.bind(null, null)); // this is needed for cb(null, file);
}
}