import { getWebSocketMessageSizeBytes } from "../../../utils/websocket-message-size.js";
export type HmrClientMessageSocket = {
    send(message: string): void;
    close(code?: number, reason?: string): void;
};
type HmrClientRateLimiter<TSocket> = {
    check(socket: TSocket): boolean;
};
export declare const getHmrWebSocketMessageSize: typeof getWebSocketMessageSizeBytes;
export declare function handleHmrClientMessage<TSocket extends HmrClientMessageSocket>(input: {
    socket: TSocket;
    data: unknown;
    rateLimiter: HmrClientRateLimiter<TSocket>;
    onActivity?: () => void;
}): void;
export {};
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