import { Attributes, NodeInterface, ReporterInterface, Systemmessage, WritableStream } from "./types.js";
/**
 *     Return the "source" and "line" attributes from the `node` given or from
 *     its closest ancestor.
 */
declare function getSourceLine(node: NodeInterface): [string | undefined, number | undefined];
interface ReporterObserverCallback {
    (msg: Systemmessage): void;
}
declare class Reporter implements ReporterInterface {
    private source;
    private observers;
    maxLevel: number;
    private debugLevel;
    DEBUG_LEVEL: number;
    INFO_LEVEL: number;
    WARNING_LEVEL: number;
    ERROR_LEVEL: number;
    private SEVERE_LEVEL;
    debugFlag?: boolean;
    reportLevel: number;
    private haltLevel;
    private errorHandler;
    private stream?;
    private encoding?;
    constructor(source: string, reportLevel: number, haltLevel?: number, stream?: WritableStream, debug?: boolean, encoding?: string, errorHandler?: string);
    setConditions(): void | never;
    systemMessage(level: number, message: string | Error, children?: NodeInterface[], kwargs?: Attributes): NodeInterface;
    notifyObservers(message: Systemmessage): void;
    attachObserver(observer: ReporterObserverCallback): void;
    debug(message: string | Error, children?: NodeInterface[], kwargs?: Attributes): NodeInterface | undefined;
    info(message: string | Error, children?: NodeInterface[], kwargs?: Attributes): NodeInterface;
    warning(message: string | Error, children?: NodeInterface[], kwargs?: Attributes): NodeInterface;
    error(message: string | Error, children?: NodeInterface[], kwargs?: Attributes): NodeInterface;
    severe(message: string | Error, children?: NodeInterface[], kwargs?: Attributes): NodeInterface;
    getSourceAndLine?: (lineno?: number) => [string, number] | undefined;
}
export default Reporter;
export { getSourceLine };