import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';
import { type StructuredPatch as ParsedFile } from 'diff';
import { type DiffCacheSlot } from './gemini/cache.js';
import { createErrorToolResponse } from './tool-response.js';
export type { ParsedFile };
export declare function getMaxDiffChars(): number;
export declare function resetMaxDiffCharsCacheForTesting(): void;
export declare function exceedsDiffBudget(diff: string): boolean;
export declare function getDiffBudgetError(diffLength: number, maxChars?: number): string;
export declare function validateDiffBudget(diff: string): ReturnType<typeof createErrorToolResponse> | undefined;
export declare const NOISY_EXCLUDE_PATHSPECS: readonly [":(exclude)package-lock.json", ":(exclude)yarn.lock", ":(exclude)pnpm-lock.yaml", ":(exclude)bun.lockb", ":(exclude)*.lock", ":(exclude)dist/", ":(exclude)build/", ":(exclude)out/", ":(exclude).next/", ":(exclude)coverage/", ":(exclude)*.min.js", ":(exclude)*.min.css", ":(exclude)*.map"];
export declare function cleanDiff(raw: string): string;
export declare function isEmptyDiff(diff: string): boolean;
export declare const EMPTY_DIFF_STATS: Readonly<DiffStats>;
export interface DiffStats {
    files: number;
    added: number;
    deleted: number;
}
export declare function parseDiffFiles(diff: string): ParsedFile[];
export declare function computeDiffStatsAndSummaryFromFiles(files: readonly ParsedFile[]): Readonly<{
    stats: DiffStats;
    summary: string;
}>;
export declare function computeDiffStatsAndPathsFromFiles(files: readonly ParsedFile[]): Readonly<{
    stats: DiffStats;
    paths: string[];
}>;
export declare function extractChangedPaths(diff: string): string[];
export declare function computeDiffStatsFromFiles(files: readonly ParsedFile[]): Readonly<DiffStats>;
export declare function computeDiffStats(diff: string): Readonly<DiffStats>;
export declare function formatFileSummary(files: ParsedFile[]): string;
export declare const DIFF_RESOURCE_URI = "internal://diff/current";
export declare const diffStaleWarningMs: import("./config.js").CachedEnvInt;
export interface DiffSlot {
    diff: string;
    diffHash: string;
    parsedFiles: readonly ParsedFile[];
    stats: DiffStats;
    generatedAt: string;
    /** Numeric epoch ms cached at creation to avoid repeated Date parsing. */
    generatedAtMs: number;
    mode: string;
    /** Auto-inferred repository identifier (owner/repo) from git remote. */
    repository: string;
}
export declare function computeDiffHash(diff: string): string;
/** Binds diff resource notifications to the currently active server instance. */
export declare function initDiffStore(server: McpServer): void;
export declare function disposeDiffStore(): void;
export declare function storeDiff(data: DiffSlot, key?: string): void;
export declare function getDiff(key?: string): DiffSlot | undefined;
export declare function hasDiff(key?: string): boolean;
/** Returns the current Gemini context cache slot for the diff, if available and model-compatible. */
export declare function getDiffCacheSlot(model?: string): DiffCacheSlot | undefined;
/** Test-only: directly set or clear the diff slot without emitting resource-updated. */
export declare function setDiffForTesting(data: DiffSlot | undefined, key?: string): void;
export declare function createNoDiffError(): ReturnType<typeof createErrorToolResponse>;