Function resolveRootNamespace

packages/runtime-dom/src/index.ts:173–185

(
  container: Element | ShadowRoot,
)

}) as CreateAppFunction<Element>

function resolveRootNamespace(
  container: Element | ShadowRoot,
): ElementNamespace {
  if (container instanceof SVGElement) {
    return 'svg'
  }
  if (
    typeof MathMLElement === 'function' &&
    container instanceof MathMLElement
  ) {
    return 'mathml'
  }
}

function injectNativeTagCheck(app: App) {
  // Inject `isNativeTag`