CoffeeScript Typeof Ternary what?

typeof_ternary.coffee

# CoffeeScript version
params[@options.param] = if model[@options.untilAttr]?() then model[@options.untilAttr]() else model.get(@options.untilAttr)

# Compiled version
params[_this.options.param] = (typeof model[_name = _this.options.untilAttr] === "function" ? model[_name]() : void 0) ? model[_this.options.untilAttr]() : model.get(_this.options.untilAttr);

# Original JS version
params[self.options.param] = typeof(model[self.options.untilAttr]) === "function" ? model[self.options.untilAttr]() : model.get(self.options.untilAttr);