Definition
Web Audio API defines AudioWorkletGlobalScope
[Global=(Worklet, AudioWorklet), Exposed=AudioWorklet]
interface AudioWorkletGlobalScope : WorkletGlobalScope {
undefined registerProcessor (DOMString name,
AudioWorkletProcessorConstructor processorCtor);
readonly attribute unsigned long long currentFrame;
readonly attribute double currentTime;
readonly attribute float sampleRate;
readonly attribute unsigned long renderQuantumSize;
readonly attribute MessagePort port;
};