UNMET PEER DEPENDENCY react-router#3.0.0 - reactjs

Question

I had an error after installed "react-bootstrap-table".
├── react#15.4.1
└── UNMET PEER DEPENDENCY react-router#3.0.0
My package.json
"dependencies": {
"isomorphic-fetch": "^2.2.1",
"react": "^15.4.0",
"react-addons-linked-state-mixin": "^15.4.0",
"react-bootstrap": "^0.30.6",
"react-bootstrap-table": "^2.6.0",
"react-cookie": "^0.4.8",
"react-dom": "^15.4.0",
"react-redux": "^4.4.6",
"react-router": "^3.0.0",
"react-router-apply-middleware": "0.0.2",
"react-router-bootstrap": "^0.23.1",
"react-router-relative-links": "^0.1.0",
"redux": "^3.6.0",
"redux-logger": "^2.7.4",
"redux-promise-middleware": "^4.1.0",
"redux-thunk": "^2.1.0"
}
Thanks any help.

Answer 1

This blog post explains Peer Dependancies well!
https://nodejs.org/en/blog/npm/peer-dependencies/
There's one use case where this falls down, however: plugins. A plugin package is meant to be used with another "host" package, even though it does not always directly use the host package. Most plugins never actually depend on their host package. The solution to this was peer dependancy
In your case it seems that you don't actually need to install it since I dug through the react-bootstrap-table package's repo and found that react-router#3.0.0 is mentioned as a dev dependency and used in their example app.
So unless they bundle the example along with the package which is highly unlikely, you can ignore it.