export interface HeaderLine {
    key: string;
    line: string;
}
export interface EmailContact {
    address: string;
    name: string;
}
export interface EmailCard {
    value: Array<EmailContact>;
    html: string;
    text: string;
}
export interface EmailRaw {
    attachments: Array<any>;
    date: string;
    headers: {
        [key: string]: string;
    };
    headerLines: Array<HeaderLine>;
    html: string;
    text: string;
    textAsHtml: string;
    subject: string;
    to: EmailCard;
    from: EmailCard;
    messageId: string;
}
export interface Message {
    category?: string;
    date: any;
    error?: string;
    lang?: string;
    lines?: string[];
    recipient: string;
    recipient_ip: string;
    recipient_proxy: string;
    sender: string;
    timestamp: number;
    topic: string;
    thread?: {
        agent?: string;
        date: string;
        lines: string[];
        recipient: string;
        sender: string;
        timestamp: number;
        topic: string;
    }[];
    type?: string;
    value?: unknown;
    version: number;
}
export interface MessageTestResult extends Pick<Message, 'category' | 'error' | 'lang' | 'type' | 'value'> {
    pass: boolean;
}
export declare type Reducer = (message: Message) => MessageTestResult;