/**
 * PresetManager - Device-aware variant preset management
 *
 * Manages transformation presets for generating optimized file variants
 * based on device type, file category, and custom configurations.
 *
 * Features:
 * - Built-in presets (profile-picture, post-image, hero-banner, video-streaming)
 * - Custom preset registration
 * - Device-aware variant selection (mobile, tablet, desktop, 4K, TV, watch)
 * - Default variants by file category
 * - Preset composition (combine multiple presets)
 * - Variant resolution and merging
 *
 * @example
 * ```ts
 * const presetManager = new PresetManager({
 *   enableBuiltInPresets: true,
 *   defaultDevice: STORAGE_DEVICE_TYPE.AUTO,
 * });
 *
 * // Register custom preset
 * presetManager.registerPreset({
 *   name: 'custom-profile',
 *   variants: ['thumbnail', 'medium', 'large'],
 *   format: 'webp',
 *   quality: 90,
 * });
 *
 * // Resolve variants for upload
 * const variants = presetManager.resolveVariants({
 *   presets: ['profile-picture'],
 *   device: STORAGE_DEVICE_TYPE.MOBILE,
 *   category: FILE_CATEGORY.ProfileImage,
 * });
 * ```
 */
import type { FILE_CATEGORY, StoragePresetConfig, StorageVariantConfig, StoragePresetManagerConfig, StorageResolveVariantsOptions } from '@plyaz/types/storage';
/**
 * PresetManager class
 * Manages variant presets and device-aware optimization
 */
export declare class PresetManager {
    private presets;
    private defaultVariants;
    private config;
    private logger?;
    constructor(config?: StoragePresetManagerConfig);
    /**
     * Register a preset
     */
    registerPreset(preset: StoragePresetConfig): void;
    /**
     * Get a preset by name
     */
    getPreset(name: string): StoragePresetConfig | undefined;
    /**
     * Get all registered presets
     */
    getAllPresets(): StoragePresetConfig[];
    /**
     * Resolve variants from presets, custom variants, and device context
     * This is the main entry point for variant resolution
     */
    resolveVariants(options: StorageResolveVariantsOptions): StorageVariantConfig[];
    /**
     * Resolve preset names to variant configurations
     */
    private resolvePresetsToVariants;
    /**
     * Resolve a single preset to variants
     */
    private resolvePresetVariants;
    /**
     * Resolve variant names to variant configurations
     */
    private resolveVariantNames;
    /**
     * Get variant configuration by name
     * Maps standard variant names to device-aware configurations
     */
    private getVariantConfigByName;
    /**
     * Normalize variants (string[] or StorageVariantConfig[]) to StorageVariantConfig[]
     */
    private normalizeVariants;
    /**
     * Get default variants for a file category
     */
    getDefaultVariants(category: FILE_CATEGORY): string[];
    /**
     * Set default variants for a category
     */
    setDefaultVariants(category: FILE_CATEGORY, variantNames: string[]): void;
    /**
     * Register built-in presets
     */
    private registerBuiltInPresets;
    /**
     * Load default variants by category
     */
    private loadDefaultVariants;
    /**
     * Log helper
     */
    private log;
}