Fails already on nmp install simple-server

[neilyoung]

patibility issues. Please, upgrade your dependencies to the actual version of core-js.
npm WARN cleanup Failed to remove some directories [
npm WARN cleanup [
npm WARN cleanup '/Users/decades/Documents/test/simple-peer-video-chat-application/simple-peer/node_modules/fsevents',
npm WARN cleanup [Error: ENOTEMPTY: directory not empty, rmdir '/Users/decades/Documents/test/simple-peer-video-chat-application/simple-peer/node_modules/fsevents'] {
npm WARN cleanup errno: -66,
npm WARN cleanup code: 'ENOTEMPTY',
npm WARN cleanup syscall: 'rmdir',
npm WARN cleanup path: '/Users/decades/Documents/test/simple-peer-video-chat-application/simple-peer/node_modules/fsevents'
npm WARN cleanup }
npm WARN cleanup ]
npm WARN cleanup ]
npm ERR! code 1