import { Score } from '../score';
import type { FreeRect } from '../types';
import type { Heuristic, HeuristicCalculator, ScoredPlacement } from './types';
export declare abstract class BaseHeuristic implements Heuristic, HeuristicCalculator {
    abstract calculateScore(freeRect: FreeRect, rectWidth: number, rectHeight: number): Score;
    findPosition(boxWidth: number, boxHeight: number, freeRects: readonly FreeRect[], constrainRotation?: boolean): ScoredPlacement | null;
    private tryFit;
}
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