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export type MessageId = number;
export type Message = [MessageId, unknown];
export function isMessage(data: unknown): data is Message {  return (    Array.isArray(data) &&    data.length === 2 &&    typeof data[0] === "number" &&    typeof data[1] !== "undefined"  );}
export function buildMessage(msgid: number, value: unknown): Message {  return [msgid, value];}