structure of "bin" within a dependencies package.json is different when installing with yarn or npm

[klausbayrhammer]

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

What is the current behavior? When installing e.g. casperjs the structure of "bin" within the node_modules/casperjs/package.json looks different whether I use yarn or npm to install the package. The yarn version looks like this:

{
  "bin": "./bin/casperjs"
}

the npm version looks like this:

{
  "bin": {
    "casperjs": "./bin/casperjs"
  },
}

Projects like BackstopJS rely on the structure of bin section within a dependencies package.json (see garris/BackstopJS#323).

If the current behavior is a bug, please provide the steps to reproduce. yarn add casperjs respectively npm i casperjs

Please mention your node.js, yarn and operating system version. yarn version v0.16.1 node v6.5.0 npm 3.10.3

[sebmck]

We aren't normalising package.json like npm is doing, we probably need to write the normalised version. Regardless, if your tool is consuming package.json then it should be doing this normalisation anyway.