peer dependency issue

[HADDADENICAR]

after running

npm install 

i get this warning :

npm WARN [email protected] requires a peer of leaflet@~1.0.3 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"})

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what is wrong