Function isUnplayable

packages/core/src/runtime/media.ts:120–122

(el: HTMLMediaElement)

// An element that errored or has no source can't play; re-issuing play() every
// tick just floods rejections. Skip it until its state changes (src reload).
function isUnplayable(el: HTMLMediaElement): boolean {
  return el.error != null || el.networkState === MEDIA_NETWORK_NO_SOURCE;
}

const lastRuntimeAppliedVolume = new WeakMap<HTMLMediaElement, number>();