export interface DiffHunk {
    filePath: string;
    oldStart: number;
    newStart: number;
    /** Every line in the hunk, including context. Each entry is "+ ", "- ", " " followed by content. */
    lines: string[];
}
export interface HeuristicFinding {
    heuristic: string;
    severity: "high" | "medium" | "low";
    file: string;
    line: number;
    snippet: string;
    message: string;
}
export declare function findUnguardedStreamCalls(hunks: DiffHunk[]): HeuristicFinding[];
export declare const ALL_HEURISTICS: ((hunks: DiffHunk[]) => HeuristicFinding[])[];
export declare function runAllHeuristics(hunks: DiffHunk[]): HeuristicFinding[];
/**
 * Parse a unified-diff string (output of `git diff -U5 ref`) into hunks.
 * Very permissive — anything that doesn't match the expected header is
 * skipped rather than raising.
 */
export declare function parseUnifiedDiff(diffText: string): DiffHunk[];
/**
 * Convenience: pull a unified diff from git and parse it.
 */
export declare function getDiffHunks(rootPath: string, ref: string): DiffHunk[];