method EventEmitter.prototype.addListenerimport { EventEmitter } from "https://deno.land/x/compress@v0.4.5/deps.ts"; addListener(eventName: string | symbol, listener: (...args: any[]) => void): thisAlias for emitter.on(eventName, listener). Alias for emitter.on(eventName, listener). ParameterseventName: string | symbollistener: (...args: any[]) => voidReturnsthis