/**
 * getSignal — fetch a single signal document from an entity bucket and
 * return parsed frontmatter + body, with `sourceRef`, `citations`, and
 * `entityRefs` surfaced as typed fields.
 */
import type { GetSignalOptions, SignalDocument } from "./types.js";
export declare class SignalNotFoundError extends Error {
    readonly key: string;
    readonly name = "SignalNotFoundError";
    constructor(key: string);
}
export declare function getSignal(opts: GetSignalOptions): Promise<SignalDocument>;
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