Package v8 provides a Go API for the the V8 javascript engine. This allows running javascript within a go executable. The bindings have been tested with v8 builds between 5.1.281.16 through 6.7.77. V8 provides two main concepts for managing javascript state: Isolates and Contexts. An isolate represents a single-threaded javascript engine that can manage one or more contexts. A context is a sandboxed javascript execution environment. Thus, if you have one isolate, you could safely execute independent code in many different contexts created in that isolate. The code in the various contexts would not interfere with each other, however no more than one context would ever be executing at a given time. If you have multiple isolates, they may be executing in separate threads simultaneously. This work is based off of several existing libraries: