Function createHMRHandler

packages/vite/src/shared/hmrHandler.ts:4–9

(
  handler: (payload: HotPayload) => Promise<void>,
)

class="cm">// updates to HMR should go one after another. It is possible to trigger another update during the invalidation for example.
export function createHMRHandler(
  handler: (payload: HotPayload) => Promise<void>,
): (payload: HotPayload) => Promise<void> {
  const queue = new Queue()
  return (payload) => queue.enqueue(() => handler(payload))
}

class Queue {
  private queue: {