Problem with case sensitive filesystem on osX

[amossam]

TypeScript Version:

`- > tsc -v
Version 1.8.10

`- > node -v
v5.11.0

`- > npm -v
3.8.8

Not shure does this belongs here.
I'm using tsc on simple node.js(angular2 quickstart) project, which uses tsc -w
Problem is, my path to project contains uppercase letters (/opt/Development/node.js/mqtt_fe),
but when I run tsc -w I get following error:

Error: watch /opt/development/node.js/mqtt_fe ENOENT

My temporary fix is to create link from /opt/Development to /opt/development
/opt is case sensitive filesystem. I'm using osX 10.11.4

Thx

[Arnavion]

Duplicate of #7154