在安裝npm時得到警告

Question

npm WARN extract-text-webpack-plugin@1.0.1 requires a peer of webpack@^1.9.11 but none is installed. You must install peer dependencies yourself. 
npm WARN karma-webpack@1.7.0 requires a peer of webpack@^1.4.0 but none is installed. You must install peer dependencies yourself. 
npm WARN react-native@0.49.2 requires a peer of react@16.0.0-beta.5 but none is installed. You must install peer dependencies yourself. 
npm WARN sass-loader@3.2.0 requires a peer of webpack@^1.12.6 but none is installed. You must install peer dependencies yourself. 
npm WARN webpack-dev-middleware@1.12.0 requires a peer of webpack@^1.0.0 || ^2.0.0 || ^3.0.0 but none is installed. You must install peer dependencies yourself. 
npm WARN webpack-dev-server@2.0.0-beta requires a peer of webpack@>=2.0.3-beta <3 but none is installed. You must install peer dependencies yourself. 
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.1.2 (node_modules\fsevents): 
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.1.2: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"}) 

我在做npm安裝時遇到了上面提到的警告。雖然，這些只是警告，並不會影響應用程序。但是，我想知道導致這些警告的是什麼。

I am using npm `version 5.4.2` 
node version is 6.11.4 
webpack 2.1.0-beta.22 

Answer 1

首先去年2個警告只是針對誰使用 比Mac和其他的用戶。（即使我沒能解決這些問題）

現在來其它警告。

您可以降級您的webpack版本或將所有內容升級到最新版本。

它們是互相兼容的，因爲我也這樣做過。

在我看來，升級所有組件是解決此問題的更好方法。

同時升級它npm-check