Function addCleanup

src/core/cleanup.ts:12–15

(callback: CleanupCallback)

}

function addCleanup(callback: CleanupCallback) {
  cleanupCallbacks = [callback, ...cleanupCallbacks]
  return () => removeCleanup(callback)
}

function removeCleanup(callback: CleanupCallback) {
  cleanupCallbacks = cleanupCallbacks.filter((cb) => cb !== callback)