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).
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 This build comes from the GTK port of WebKit (API version 4.0).
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 This package contains the introspection data, which can be used by
 packages using the GIRepository format to generate dynamic bindings.