when I run "npm run test" I get the following error

'jsx)'' is not recognized as an internal or external command, operable program or batch file.

I changed extensions to js and removed the quotes from the glob pattern and it is working. But, not sure, if this is with problem with node version or OS.

mocha --compilers js:babel-core/register --require ./test/test_helper.js test/**/*.js

Node version is 4.2.1
OS is Windows 7 Professional