nodejs check whether the file name is case-insensitive and get the real path for the case-insensitive file-system across os.

get-real-path.coffee

fs  = require 'fs'
path= require 'path'
tmp = require 'tmp'
tmp.setGracefulCleanup()

folderIsInsensitive = (aFolder)->
  aFolder ?= '.'
  t = tmp.fileSync template:path.join aFolder, '_tmp-XXXXXXXXX'
  result = fs.existsSync t.name.toUpperCase()
  t.removeCallback()
  result

getRealPathForInsensitive = (aPath)->
  result = ''
  while aPath and aPath != path.sep
    basename = path.basename(aPath).toLowerCase()
    aPath = path.dirname aPath
    dirs  = fs.readdirSync aPath
    for dir in dirs
      if dir.toLowerCase() is basename
        result = path.join dir, result
        break
  path.join aPath, result

getRealPath = (aPath)->
  if folderIsInsensitive aPath
    getRealPathForInsensitive(aPath)
  else
    aPath