Fix the getCanonicalFileName in sys.ts and also check null value in f…#6509

Merged

zhengbli merged 2 commits intomicrosoft:masterfrom zhengbli:fixPathForWatcher

Jan 16, 2016

+11-5

Commits on Jan 15, 2016

Fix the getCanonicalFileName in sys.ts and also check null value in file watcher call back
zhengbli
committed

Commits on Jan 16, 2016

address CR feedback: use typeof check instead of checking undefined and null value
zhengbli
committed