import type { ImageFormat } from './types.js';
export interface ResizeFileParams {
    source: string;
    breakpoints: number[];
    quality: number;
    /** When set, re-encode each variant into this format. Otherwise preserve source encoding. */
    format?: ImageFormat;
    /** Optional infix inserted into every output filename to disambiguate colliding outputs. */
    disambiguator?: string;
}
export interface ResizeFileResult {
    outputs: string[];
}
/**
 * Resize a single file to every breakpoint smaller than the source width (no upscale).
 * Aspect ratio is preserved and height is computed from the source metadata.
 */
export declare function resizeFile({ source, breakpoints, quality, format, disambiguator, }: ResizeFileParams): Promise<ResizeFileResult>;
//# sourceMappingURL=resizer.d.ts.map