Javascriptcore is the javascript engine used in webkit. it consists of the following building blocks: lexer, parser, start-up interpreter (llint), baseline jit, a low-latency optimizing jit (dfg), and a high-throughput optimizing jit (ftl).

this build comes from the gtk+ port of webkit (api version 1.0).

this package contains the introspection data, which can be used by packages using the girepository format to generate dynamic bindings.