/**
 * Test coverage parser. Reads lcov, istanbul JSON, and cobertura XML formats.
 * Maps coverage data to source files for "is this code tested?" queries.
 */
export interface FileCoverage {
    file: string;
    lines: {
        total: number;
        covered: number;
        percentage: number;
    };
    functions: {
        total: number;
        covered: number;
        percentage: number;
    };
    branches: {
        total: number;
        covered: number;
        percentage: number;
    };
    uncoveredLines: number[];
    uncoveredFunctions: string[];
}
export interface CoverageSummary {
    format: string;
    totalFiles: number;
    lines: {
        total: number;
        covered: number;
        percentage: number;
    };
    functions: {
        total: number;
        covered: number;
        percentage: number;
    };
    branches: {
        total: number;
        covered: number;
        percentage: number;
    };
    files: FileCoverage[];
}
/**
 * Auto-detect and parse coverage from common file locations.
 * @param cwd - The working directory to scan.
 * @returns The parsed coverage summary, or null if no coverage data found.
 */
export declare function parseCoverage(cwd: string): Promise<CoverageSummary | null>;
/**
 * Get coverage for a specific file.
 * @param summary - The coverage summary to search.
 * @param filePath - The file path to look up.
 * @returns The file coverage data, or null if not found.
 */
export declare function getFileCoverage(summary: CoverageSummary, filePath: string): FileCoverage | null;
/**
 * Find untested files (no coverage data or 0% coverage).
 * @param summary - The coverage summary to search.
 * @returns Array of file paths with zero coverage.
 */
export declare function getUntestedFiles(summary: CoverageSummary): string[];
/**
 * Detect test file locations via naming conventions.
 * @param cwd - The working directory to scan.
 * @returns Array of test file paths.
 */
export declare function findTestFiles(cwd: string): Promise<string[]>;
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