/**
 * Mutation Testing - Inject faults into test assertions to verify test quality.
 *
 * Tests the tests: mutate assertions and check if the test suite catches the mutations.
 */
import type { TestCase } from './types';
export type MutationType = 'remove_assertion' | 'change_expected_output' | 'weaken_threshold' | 'swap_tool_name' | 'remove_tool_sequence' | 'negate_assertion';
export interface Mutation {
    type: MutationType;
    description: string;
    testName: string;
    field: string;
    original: any;
    mutated: any;
}
export interface MutationResult {
    mutation: Mutation;
    caught: boolean;
    message?: string;
}
export interface MutationReport {
    total: number;
    caught: number;
    escaped: number;
    score: number;
    results: MutationResult[];
}
/**
 * Generate mutations for a test case.
 */
export declare function generateMutations(test: TestCase): Mutation[];
/**
 * Apply a mutation to a test case, returning a mutated copy.
 */
export declare function applyMutation(test: TestCase, mutation: Mutation): TestCase;
/**
 * Run mutation analysis on a set of test cases.
 * Accepts a test runner function that returns pass/fail for a test.
 */
export declare function runMutationAnalysis(tests: TestCase[], runTest: (test: TestCase) => Promise<boolean>): Promise<MutationReport>;
/**
 * Format mutation report for terminal display.
 */
export declare function formatMutationReport(report: MutationReport): string;
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