Currently, allenfeng/react-toastr locks in React like so:

"react": "^0.14.0 || <15.4.0" 

However, I am currently using react 15.4.1, so I have duplicate React packages in my bundle. Thus, react-toastr comprise 5.65% of my bundle. Funnily enough, I don't even use the toastr parts of this package :/

font-awesome: 1.42 MB (13.0%) lodash: 688.56 KB (6.14%) @allenfang/react-toastr: 633.7 KB (5.65%) react: 580.18 KB (91.6%) fbjs: 32.93 KB (5.20%) react-dom: 63 B (0.00971%) <self>: 20.53 KB (3.24%) 

Can you upgrade the dep to allow for newer versions of react?