node-d3-dispatch - 1.0.6+~1.0.9-1 main

Dispatching is a convenient mechanism for separating concerns with
loosely-coupled code: register named callbacks and then call them with
arbitrary arguments. A variety of D3 components, such as d3-request, use this
mechanism to emit events to listeners. Think of this like Node’s EventEmitter,
except every listener has a well-defined name so it’s easy to remove or
replace them.
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Node.js is an event-based server-side JavaScript engine.