> The restless race of a traveler’s heart before the journey begins; The tangled feeling of fear and excitement before a journey begins.
>The restless race of the traveller’s heart in anticipation of travel
There is no direct English word to explain the pre-travel jitters and there Sweedish language got this apt word to describe this feeling. Hence, it’s widely used by native English speakers also.
Example
>I’m feeling so much resfeber for my trip to Toronto tomorrow morning.
>I was feeling so much resfeber last night I couldn’t sleep.