/**
 * Git Integration — tie tests to git commits, generate reports, and bisect regressions.
 *
 * @module git-integration
 */
import type { SuiteResult } from './types';
export interface CommitTestResult {
    hash: string;
    shortHash: string;
    author: string;
    date: string;
    message: string;
    suiteResult?: SuiteResult;
    passed: number;
    failed: number;
    total: number;
    regressions: string[];
    fixes: string[];
}
export interface GitReport {
    commits: CommitTestResult[];
    trend: GitTrend;
    summary: string;
}
export interface GitTrend {
    totalTestsDelta: number;
    passRateDelta: number;
    regressionsIntroduced: number;
    regressionsFixed: number;
}
export interface BisectOptions {
    test: string;
    goodCommit: string;
    badCommit: string;
    maxSteps?: number;
}
export interface BisectResult {
    found: boolean;
    commit?: CommitTestResult;
    stepsSearched: number;
    searchPath: string[];
    expression: string;
}
export interface GitDiffFile {
    path: string;
    status: 'added' | 'modified' | 'deleted' | 'renamed';
    additions: number;
    deletions: number;
}
export interface GitDiff {
    fromRef: string;
    toRef: string;
    files: GitDiffFile[];
    totalAdditions: number;
    totalDeletions: number;
}
/**
 * Parse a git log line into structured commit info.
 * Expected format: "hash|shortHash|author|date|message"
 */
export declare function parseCommitLine(line: string): Omit<CommitTestResult, 'passed' | 'failed' | 'total' | 'regressions' | 'fixes' | 'suiteResult'> | null;
/**
 * Parse git diff --stat output into structured file changes.
 */
export declare function parseDiffStat(diffOutput: string): GitDiffFile[];
/**
 * Parse git diff --numstat output into structured file changes.
 */
export declare function parseNumstat(numstatOutput: string): GitDiffFile[];
/**
 * Compare two suite results to find regressions and fixes.
 */
export declare function diffSuiteResults(previous: SuiteResult | undefined, current: SuiteResult): {
    regressions: string[];
    fixes: string[];
};
/**
 * Build a commit test result from a suite result and commit info.
 */
export declare function buildCommitResult(commit: {
    hash: string;
    shortHash: string;
    author: string;
    date: string;
    message: string;
}, suiteResult: SuiteResult, previous?: SuiteResult): CommitTestResult;
/**
 * Generate a git report from a list of commit results.
 */
export declare function generateGitReport(commits: CommitTestResult[]): GitReport;
/**
 * Calculate trend across commits.
 */
export declare function calculateTrend(commits: CommitTestResult[]): GitTrend;
/**
 * Format a git report into human-readable text.
 */
export declare function formatGitReport(commits: CommitTestResult[], trend: GitTrend): string;
/**
 * Parse a bisect test expression, e.g. "search accuracy > 0.8".
 * Returns a function that evaluates against a SuiteResult.
 */
export declare function parseBisectExpression(expr: string): (result: SuiteResult) => boolean;
/**
 * Simulate a bisect search over a list of commit results.
 * Returns the first commit where the test expression fails.
 */
export declare function bisectSearch(commits: CommitTestResult[], expression: string): BisectResult;
/**
 * Format bisect result.
 */
export declare function formatBisectResult(result: BisectResult): string;
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