interface dom.SpeechSynthesisEventInit implements EventInitimport { type dom } from "https://deno.land/x/evt@v2.4.6/mod.ts"; const { SpeechSynthesisEventInit } = dom; PropertiesoptionalcharIndex: numberoptionalcharLength: numberoptionalelapsedTime: numberoptionalname: stringutterance: SpeechSynthesisUtterance