import type { GitClient } from "../ports/git.js";
import type { JsonObject } from "../contracts/json-object.js";
export interface ExportChange {
    readonly symbol: string;
    readonly filePath: string;
    readonly kind: string;
    readonly changeType: "added" | "removed" | "signature_changed";
    readonly signature?: string | undefined;
    readonly previousSignature?: string | undefined;
}
export interface ExportSurfaceDiffResult {
    readonly base: string;
    readonly head: string;
    readonly added: readonly ExportChange[];
    readonly removed: readonly ExportChange[];
    readonly changed: readonly ExportChange[];
    readonly semverImpact: "major" | "minor" | "patch" | "none";
    readonly summary: string;
}
export interface ExportSurfaceDiffOptions {
    readonly cwd: string;
    readonly git: GitClient;
    readonly base?: string | undefined;
    readonly head?: string | undefined;
}
/**
 * Compute the export surface diff between two git refs.
 *
 * Extracts outlines at both refs, filters to exported symbols, and
 * classifies additions, removals, and signature changes. Derives
 * the semver impact from the change set.
 */
export declare function exportSurfaceDiff(opts: ExportSurfaceDiffOptions): Promise<ExportSurfaceDiffResult>;
/** Serialize an ExportSurfaceDiffResult for MCP / CLI output. */
export declare function exportSurfaceDiffToJson(result: ExportSurfaceDiffResult): JsonObject;
//# sourceMappingURL=export-surface-diff.d.ts.map