/**
 * E2E Test Runner - Matcher Implementations
 *
 * Each matcher function returns { pass: boolean, message: string }
 * where message describes the assertion failure if pass is false.
 */
/**
 * Result of a matcher evaluation
 */
export interface MatcherResult {
    pass: boolean;
    message: string;
}
/**
 * A matcher function that compares actual value against expected
 */
export type MatcherFunction<T = unknown> = (actual: unknown, expected?: T) => MatcherResult;
/**
 * Format a value for display in error messages
 */
export declare function formatValue(value: unknown, maxLength?: number): string;
/**
 * Get the type name of a value
 */
export declare function getTypeName(value: unknown): string;
/**
 * Deep equality comparison
 */
export declare function deepEqual(a: unknown, b: unknown): boolean;
/**
 * Strict equality matcher (===)
 */
export declare function toBe(actual: unknown, expected: unknown): MatcherResult;
/**
 * Deep equality matcher
 */
export declare function toEqual(actual: unknown, expected: unknown): MatcherResult;
/**
 * Check if actual is one of the expected values
 */
export declare function toBeOneOf(actual: unknown, expected: unknown[]): MatcherResult;
/**
 * Check if value is defined (not undefined)
 */
export declare function toBeDefined(actual: unknown): MatcherResult;
/**
 * Check if value is undefined
 */
export declare function toBeUndefined(actual: unknown): MatcherResult;
/**
 * Check if value is null
 */
export declare function toBeNull(actual: unknown): MatcherResult;
/**
 * Check if value is not null
 */
export declare function toBeNotNull(actual: unknown): MatcherResult;
/**
 * Check if value is truthy
 */
export declare function toBeTruthy(actual: unknown): MatcherResult;
/**
 * Check if value is falsy
 */
export declare function toBeFalsy(actual: unknown): MatcherResult;
/**
 * Check if array/string contains an item
 */
export declare function toContain(actual: unknown, item: unknown): MatcherResult;
/**
 * Check if array/string/object has specific length
 */
export declare function toHaveLength(actual: unknown, length: number): MatcherResult;
/**
 * Check if string matches a pattern
 */
export declare function toMatch(actual: unknown, pattern: RegExp | string): MatcherResult;
/**
 * Check if actual is greater than value
 */
export declare function toBeGreaterThan(actual: unknown, value: number): MatcherResult;
/**
 * Check if actual is greater than or equal to value
 */
export declare function toBeGreaterThanOrEqual(actual: unknown, value: number): MatcherResult;
/**
 * Check if actual is less than value
 */
export declare function toBeLessThan(actual: unknown, value: number): MatcherResult;
/**
 * Check if actual is less than or equal to value
 */
export declare function toBeLessThanOrEqual(actual: unknown, value: number): MatcherResult;
/**
 * Check if object has a property, optionally with a specific value
 */
export declare function toHaveProperty(actual: unknown, path: string, expectedValue?: unknown): MatcherResult;
/**
 * Check if value is of a specific type
 */
export declare function toBeType(actual: unknown, expectedType: string): MatcherResult;
/**
 * Registry of all available matchers
 */
export declare const matchers: {
    readonly toBe: typeof toBe;
    readonly toEqual: typeof toEqual;
    readonly toBeOneOf: typeof toBeOneOf;
    readonly toBeDefined: typeof toBeDefined;
    readonly toBeUndefined: typeof toBeUndefined;
    readonly toBeNull: typeof toBeNull;
    readonly toBeNotNull: typeof toBeNotNull;
    readonly toBeTruthy: typeof toBeTruthy;
    readonly toBeFalsy: typeof toBeFalsy;
    readonly toContain: typeof toContain;
    readonly toHaveLength: typeof toHaveLength;
    readonly toMatch: typeof toMatch;
    readonly toBeGreaterThan: typeof toBeGreaterThan;
    readonly toBeGreaterThanOrEqual: typeof toBeGreaterThanOrEqual;
    readonly toBeLessThan: typeof toBeLessThan;
    readonly toBeLessThanOrEqual: typeof toBeLessThanOrEqual;
    readonly toHaveProperty: typeof toHaveProperty;
    readonly toBeType: typeof toBeType;
};
export type MatcherName = keyof typeof matchers;
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