/**
 * Coalition Formation Algorithm
 *
 * Implements minimal winning coalition theory with policy distance optimization
 *
 * Research Foundation:
 * - Laver (2020): Agent-based modeling in political decision making
 * - Martin & Stevenson (2001): Government formation in parliamentary democracies
 * - Spatial model: Parties closer in policy space more likely to form coalitions
 *
 * Algorithm:
 * 1. Generate all possible coalitions that exceed threshold (>50% seats)
 * 2. Filter to minimal winning coalitions (no redundant parties)
 * 3. Filter incompatible party combinations (blacklists)
 * 4. Calculate policy distance for each viable coalition
 * 5. Select coalition with minimum policy distance (most cohesive)
 *
 * @module coalition/CoalitionFormation
 */
import { PoliticalParty } from '../core/PoliticalParty.js';
import { Coalition } from './Coalition.js';
/**
 * Coalition formation options
 */
export interface CoalitionFormationOptions {
    /** Seat threshold for coalition (default: 0.5 for majority) */
    threshold?: number;
    /** Current month in simulation (for formation date) */
    currentMonth?: number;
    /** Maximum coalition size (default: 4 parties) */
    maxCoalitionSize?: number;
    /** Prefer minimal winning coalitions? (default: true) */
    preferMinimalWinning?: boolean;
}
/**
 * Form government coalition from election results
 *
 * @param parties - All parties with seat shares
 * @param options - Formation options
 * @returns Coalition, or null if no viable coalition exists
 */
export declare function formCoalition(parties: PoliticalParty[], options?: CoalitionFormationOptions): Coalition | null;
/**
 * Find all minimal winning coalitions
 *
 * Useful for analyzing coalition options
 */
export declare function findAllMinimalWinningCoalitions(parties: PoliticalParty[], _threshold?: number, maxSize?: number): Coalition[];
/**
 * Calculate formation probability for a coalition
 * Based on policy distance and coalition preferences
 *
 * @returns Probability 0-1
 */
export declare function calculateFormationProbability(coalition: Coalition): number;