webpack - peerDependencies WARNI

由于之前把node.js升级到了最新版，移除原先的node_modules文件加后，重新

   cnpm install

出现以下错误信息：

peerDependencies WARNING inject-loader@3.0.0 requires a peer of webpack@^1 || ^2 but webpack@3.6.0 was installed
peerDependencies WARNING karma-sinon-chai@1.3.1 requires a peer of chai@^3.5.0 but chai@4.1.2 was installed
peerDependencies WARNING karma-webpack@2.0.2 requires a peer of webpack@^1.1.0 || ^2 || ^2.1.0-beta.0 || ^2.2.0-rc.0 but webpack@3.6.0 was installed
peerDependencies WARNING sinon-chai@2.8.0 requires a peer of chai@>=1.9.2 <4 but chai@4.1.2
was installed
peerDependencies WARNING karma-sinon-chai@1.3.1 requires a peer of sinon@^2.1.0 but sinon@40.0 was installed
peerDependencies WARNING sinon-chai@2.8.0 requires a peer of sinon@>=1.4.0 <2 but sinon@4.00 was installed
peerDependencies WARNING karma-sinon-chai@1.3.1 requires a peer of sinon-chai@^2.9.0 but sion-chai@2.8.0 was installed

原因是package.json里面的一些依赖包的版本与node.js版本兼容问题导致的
解决方法是把错误信息里提及的依赖包前面添加^，再cnpm install一下就可以了。
例如

    "karma-sinon-chai": "^1.3.1"
    "sinon-chai": "^2.8.0"