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

在一个新的vue项目中，执行npm install安装依赖
报错

PS D:\webfrontend\VueWorkSpace\vuetest20200817002> npm install
npm WARN @vue/[email protected] requires a peer of @vue/compiler-sfc@^3.0.0-beta.14 but none is installed. You must install peer dependencies yourself.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\watchpack-chokidar2\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules\webpack-dev-server\node_modules\fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

在package.json里找不到fsevents，但是仍然安装了。
是因为你的系统是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，其他的npm包也会有依赖fsevents的！！！
这是warning错误，是因为mac下需要 fsevents，这里是在windows环境，所以可以忽略这个警告，对你没什么影响的
是warning一律没影响，不是error就成！