react-router-* should provide as is absolutely all not changed inherited functions

[a-x-]

// Excuse my beginner's English

e.g. react-router-dom does not re-exports browserHistory now.

also, instead of creating wrappers for every react-router function it'll be the better keep only index.js with re-exports (better for changed method readability. e.g. I want to look sources of react-router-dom for added/changed methods, I have to open all the modules in the react-router-dom/modules/index.js
now ).

e.g. wrapper to delete:
MemoryRouter.js

export { MemoryRouter as default } from 'react-router'

e.g. how to rewrite re-exports:
react-router-dom/modules/index.js

// ...
export MemoryRouter from '../react-router/MemoryRouter'
// ...

thank you

[pshrmn]

1. browserHistory is not exported because it no longer exists. The <BrowserRouter> component creates a history object for you. If you need a custom history object, you have to create it yourself and pass it to a <Router>.

2. The separate files have something to do with enabling tree shaking (see Add ES build to react-router and react-router-dom (#4425) #4432 and the issue it links to). I'm not familiar enough with tree shaking to add any more information on why it was necessary.