import type { StructuralEvidenceKind, StructuralSubstrateKind } from "../generated/graft-structural-history.js";
import type { StructuralReadingEvidenceLabel } from "./structural-reading.js";
export type StructuralHistoryAdapterKind = "echo" | "git-warp-import" | "git-warp-fallback";
export interface StructuralHistoryProviderDescriptor {
    readonly adapter: StructuralHistoryAdapterKind;
    readonly evidenceLabel: StructuralReadingEvidenceLabel;
    readonly generatedEvidenceKind: StructuralEvidenceKind;
    readonly substrate: "echo" | "git-warp";
    readonly generatedSubstrateKind: StructuralSubstrateKind;
}
export interface StructuralHistoryProviderStatus {
    readonly provider: StructuralHistoryProviderDescriptor;
    readonly available: boolean;
    readonly reason?: string | undefined;
}
export interface StructuralHistoryPort {
    describeProvider(): StructuralHistoryProviderDescriptor;
    status(): Promise<StructuralHistoryProviderStatus>;
}
export declare const ECHO_NATIVE_HISTORY_PROVIDER: StructuralHistoryProviderDescriptor;
export declare const GIT_WARP_IMPORTED_HISTORY_PROVIDER: StructuralHistoryProviderDescriptor;
export declare const GIT_WARP_FALLBACK_HISTORY_PROVIDER: StructuralHistoryProviderDescriptor;
//# sourceMappingURL=structural-history.d.ts.map