npm install 报警告npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\fsevents

npm notice created a lockfile as package-lock.json. You should commit this file.
npm WARN fsevents@1.2.0 had bundled packages that do not match the required version(s). They have been replaced with non-bundled versions.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.0 (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.0: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

原因：
fsevents不在package.json里，但是仍然安装了，是因为你的系统不是Windows系统，fsevents是苹果系统的可选依赖,你的项目有可能是团队项目，别人在他的mac上安装了fsevents相关依赖库，所以到这边你也就安装到你的windows上边了。你可以检查你的package.json 文件中是不是有fsevents相关依赖，删除即好！
如果没有，删除node_modules文件夹，重新安装各项依赖就好了

    npm install