Can't bundle with React-Router

[salztorte]

rollup/rollup#502

Can't bundel react-router because of

Cannot overwrite the same content twice: 'invariant'

In the other issues we found out that this is a Problem with the rollup-plugin-replace and the react-router

[STAH]

The main problem here is using nested ternary operators. If you replace line like this in react-router (Redirect.js, IndexRedirect.js, Route.js and IndexRoute.js):

!false ? process.env.NODE_ENV !== 'production' ? invariant(false, '<Route> elements are for router configuration only and should not be rendered') : invariant(false) : undefined;

by if statements

if (!false) {
  if (process.env.NODE_ENV !== 'production') {
    invariant(false, '<Route> elements are for router configuration only and should not be rendered');
  } else {
    invariant(false);
  }
} else {
  undefined;
}

rollup will bundle your code without errors.

Don't know if it is really rollup-plugin-replace issue...

[STAH]

Just made small rollup plugin to convert ternary expressions to if statements: https://github.com/nashdot/rollup-plugin-ternary (conversion is not perfect yet...)

Using it correct your problem: https://github.com/nashdot/RollupReactRouter

[wesleygrimes]

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