import type { StorageAdapter } from './storage-adapter.js';
import type { ImageGenerationResult } from './types.js';
/**
 * Fluent image generation facade.
 *
 * @example
 * const result = await ImageGenerator.of('A sunset over mountains').size('landscape').generate()
 * const path = await ImageGenerator.of('A logo').model('openai/dall-e-3').store('images/logo.png', storage)
 *
 * @example  Failover across providers
 * const result = await ImageGenerator.of('A donut')
 *   .model('openai/dall-e-3')
 *   .failover('google/imagen-3', 'azure/dall-e-3')
 *   .generate()
 */
export declare class ImageGenerator {
    private readonly _prompt;
    private _model;
    private _size;
    private _quality;
    private _style;
    private _n;
    private _failover;
    private constructor();
    static of(prompt: string): ImageGenerator;
    model(model: string): this;
    /**
     * Provider/model strings to try if the primary fails.
     * Tried in order; the first to succeed wins. Swallows individual errors,
     * surfaces only the last one if every candidate fails.
     */
    failover(...models: string[]): this;
    size(size: string): this;
    quality(quality: 'standard' | 'hd'): this;
    style(style: 'natural' | 'vivid'): this;
    count(n: number): this;
    generate(): Promise<ImageGenerationResult>;
    /**
     * Generate the first image and persist it through a caller-supplied
     * {@link StorageAdapter}. Returns the `path` it was stored at.
     *
     * ```ts
     * import { writeFile } from 'node:fs/promises'
     * await ImageGenerator.of('a logo')
     *   .store('out/logo.png', { put: (p, bytes) => writeFile(p, bytes) })
     * ```
     */
    store(path: string, storage: StorageAdapter): Promise<string>;
}
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