Function cleanup

src/core/cleanup.ts:5–10

()

let cleanupCallbacks: Array<CleanupCallback> = []

async function cleanup() {
  for (const callback of cleanupCallbacks) {
    await callback()
  }
  cleanupCallbacks = []
}

function addCleanup(callback: CleanupCallback) {
  cleanupCallbacks = [callback, ...cleanupCallbacks]