解决npm WARN optional SKIPPING OPT

npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules\fsevents):

npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.9: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})

解决：

这是warning错误，是因为mac下需要 fsevents，在windows或linux环境下，请忽略这个错误。