import { PDG } from './pdg.js';
import { Sigma } from './sigma.js';
/**
 * Find all injective subgraph isomorphism mappings f: V_c -> V_t.
 * Matches rcf_core.canary.find_subgraph_isomorphisms in Python.
 */
export declare function findSubgraphIsomorphisms(gC: PDG, gT: PDG): Array<Record<number, number>>;
export declare function pdgFromDict(d: any, sigma: Sigma): PDG;
export declare class CanaryRecord {
    name: string;
    createdAt: string;
    description: string;
    pdg: PDG;
    constructor(name: string, createdAt: string, description: string, pdg: PDG);
    toDict(): any;
    static fromDict(d: any, sigma: Sigma): CanaryRecord;
}
export declare function extractCanaryBlock(fileContent: string): string;
export declare class CanaryRegistry {
    registryPath: string;
    sigma: Sigma;
    canaries: Record<string, CanaryRecord>;
    constructor(registryPath: string, sigma: Sigma);
    load(): void;
    save(): void;
    register(name: string, sourceCode: string, description?: string): void;
}
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