import type CreativeEditorSDK from '@cesdk/cesdk-js';
/**
 * Converts a blob: or buffer: URL to a data URI that Runware can accept
 */
export declare function convertImageUrlForRunware(imageUrl?: string, cesdk?: CreativeEditorSDK): Promise<string | undefined>;
export declare function isCustomImageSize(imageSize: any): imageSize is {
    width: number;
    height: number;
};
/**
 * Constraints for a single dimension (width or height)
 */
export interface DimensionRange {
    min: number;
    max: number;
}
/**
 * Model-specific dimension constraints for image generation.
 * Allows separate constraints for width and height.
 */
export interface DimensionConstraints {
    width: DimensionRange;
    height: DimensionRange;
    /** Round dimensions to this multiple (e.g., 16). Defaults to 1 if not specified. */
    multiple?: number;
}
/**
 * Converts an array of blob:/buffer: URLs to data URIs for Runware.
 * Used for multi-image inputs like combineImages quick action.
 */
export declare function convertImageUrlArrayForRunware(imageUrls?: string[], cesdk?: CreativeEditorSDK): Promise<string[] | undefined>;
/**
 * Adjusts dimensions to meet API constraints:
 * - Width and height are constrained to their respective min/max ranges
 * - Optionally rounds to a multiple (e.g., 16)
 * - Preserves aspect ratio when scaling
 *
 * @param width - Original width
 * @param height - Original height
 * @param constraints - Model-specific dimension constraints
 */
export declare function adjustDimensions(width: number, height: number, constraints: DimensionConstraints): {
    width: number;
    height: number;
};