import { type PeriodicWave } from "https://deno.land/x/windmill@v1.298.0/node_modules/evt/lib/types/lib.dom.d.ts";
PeriodicWave has no inputs or outputs; it is used to define custom oscillators when calling OscillatorNode.setPeriodicWave(). The PeriodicWave itself is created/returned by AudioContext.createPeriodicWave().