os.tmpDir() is deprecated

[dirkbosman]

After running the

After running the following: $ react-native run-ios, it gave me the output:

(node:19496) [DEP0022] DeprecationWarning: os.tmpDir() is deprecated. Use os.tmpdir() instead.
Found Xcode project CrossPlatformBlog.xcodeproj
dyld: Library not loaded: /Library/Developer/PrivateFrameworks/CoreSimulator.framework/Versions/A/CoreSimulator
Referenced from: /Applications/Xcode.app/Contents/Developer/usr/bin/simctl
Reason: image not found

Command failed: xcrun simctl list devices
dyld: Library not loaded: /Library/Developer/PrivateFrameworks/CoreSimulator.framework/Versions/A/CoreSimulator
Referenced from: /Applications/Xcode.app/Contents/Developer/usr/bin/simctl
Reason: image not found

Is this related to my Xcode setup, or is it anything related to your code ? Thanks!