FIX ionic,angular: npm ERR! notsup Unsupported platform for ios-deploy@1.11.4: wanted {"os": "darwin"} (current: {"os": "win32″, "arch": "x64″})

ERROR:

npm WARN old lockfile
npm WARN old lockfile The package-lock.json file was created with an old version of npm,
npm WARN old lockfile so supplemental metadata must be fetched from the registry.
npm WARN old lockfile
npm WARN old lockfile This is a one-time fix-up, please be patient...
npm WARN old lockfile
npm ERR! code EBADPLATFORM
npm ERR! notsup Unsupported platform for ios-deploy@1.11.4: wanted {"os": "darwin"} (current: {"os":"win32","arch":"x64"})
npm ERR! notsup Valid OS: darwin
npm ERR! notsup Valid Arch: undefined
npm ERR! notsup Actual OS: win32
npm ERR! notsup Actual Arch: x64

FIX: add following lines to package.json

"optionalDependencies": {
"ios-deploy": "1.11.4"
},