import { ModelFamily, PromptRequest, GeneratedPrompt, StylePreset, ContentRating } from "../types.js";
/**
 * Base class for prompt generation strategies
 */
export declare abstract class PromptStrategy {
    abstract readonly family: ModelFamily;
    abstract readonly name: string;
    /**
     * Generate an optimized prompt for this model family
     */
    abstract generate(request: PromptRequest): GeneratedPrompt;
    /**
     * Get style-specific keywords for a preset
     */
    protected getStyleKeywords(style?: StylePreset): string[];
    /**
     * Get default dimensions for aspect ratio
     */
    protected getDimensions(aspectRatio?: "portrait" | "landscape" | "square" | "wide" | "tall"): {
        width: number;
        height: number;
    };
    /**
     * Apply emphasis to keywords (model-specific)
     */
    protected abstract applyEmphasis(keyword: string, strength?: number): string;
    /**
     * Get rating tag if applicable
     */
    protected getRatingTag(rating?: ContentRating): string | null;
}