export type Priority = 'High' | 'Normal';
export type EnvelopedMessage<Message> = Readonly<{
    priority: Priority;
    message: Message;
}>;
/** Reorders a batch of EnvelopedMessages so all `High` envelopes appear
 *  before any `Normal` envelope, preserving FIFO order within each priority
 *  class. The runtime calls this on each `Queue.takeAll` batch so user input
 *  (view dispatch, navigation, subscription events, managed-resource events,
 *  external dispatchers) lands ahead of chain-derived work (Command results)
 *  whenever both share a frame.
 *
 *  Single-pass partition: walks the batch once and pushes each unwrapped
 *  message into either `highs` or `normals`, then concatenates. Avoids the
 *  four allocations of the previous filter/filter/appendAll/map chain. */
export declare const orderByPriority: <Message>(batch: ReadonlyArray<EnvelopedMessage<Message>>) => ReadonlyArray<Message>;
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