You'll really have to use your own discretion. Salt's very hard on aluminum and alloy components even anodized ones. Corrosion's accelerated when the salt dissolves in water so like a car, bringing the bike into a heated garage isn't a good idea unless you're prepared to wash it down. Doesn't have to be a spit-shine, just a rince. And if you leave the bike outside I wouldn't worry about salt until things get warm enough to melt anything on the bike.