import { PromptStrategy } from "./base.js";
import { ModelFamily, PromptRequest, GeneratedPrompt, ContentRating } from "../types.js";
/**
 * Prompt strategy for Illustrious XL and NovelAI-style models
 *
 * Key characteristics:
 * - Tag-based prompting (comma-separated)
 * - Quality boosters at start
 * - Extensive negative prompt required
 * - CFG 4.5-7.5, Euler A, 20+ steps
 */
export declare class IllustriousStrategy extends PromptStrategy {
    readonly family: ModelFamily;
    readonly name = "Illustrious XL";
    private readonly QUALITY_TAGS;
    private readonly NEGATIVE_PROMPT;
    private readonly NEGATIVE_PROMPT_SHORT;
    generate(request: PromptRequest): GeneratedPrompt;
    protected applyEmphasis(keyword: string, strength?: number): string;
    protected getRatingTag(rating?: ContentRating): string | null;
    /**
     * Convert natural language to tag format
     */
    private descriptionToTags;
    private buildExplanation;
    private generateVariations;
}