unexpected version resolution (bug or feature?)

[tony-kerz]

Do you want to request a feature or report a bug?

What is the current behavior?

top level package.json contains:

dependencies: {
  //...
  "react": "^15.6.1"
  //...
}

react 16.0.0 is resolved into top-level node_modules

If the current behavior is a bug, please provide the steps to reproduce.

https://github.com/tony-kerz/react-redux-scratch/tree/fde9c817457fc68db8da002c55ab95527a7d26ee

What is the expected behavior?
react 15.6.1 (or version compatible with provided semver) is resolved into top-level node_modules

Please mention your node.js, yarn and operating system version.
node: 8.6
yarn: 1.1.0
os: osx 10.11.6

[BYK]

Most probably a duplicate of #4550 if it doesn't happen in 1.0.2. Fix on the way. Reopen if you think this is different.