[Q&A]: does the JS runtime preserve in memory objects?

[dberardo-com]

say that one needs to create complex objects in the JS runtime, is it possible to reuse those objects from memory after the JS script has run the first time, or will the runtime be garbage collected at every execution?

and also: is it possible to use additional npm packages / js libraries in the JS runtime ?

[dberardo-com]

according to this comment robertkrimen/otto#544 (comment) it should be the case as long as the same runtime is used. is this the case in this project ?