import { type Translator } from '../locale/index.js';
import type { FileMount, SaveFormat } from '../surface/index.js';
import type { Overlay } from './overlay.js';
export interface SavePanelOptions {
    readonly file: FileMount;
    readonly surface: HTMLElement;
    readonly locale?: string;
    readonly translator?: Translator;
}
export declare function extensionFor(formats: readonly SaveFormat[], at: number): string;
export declare function extWidth(formats: readonly SaveFormat[]): number;
export declare function formatName(format: SaveFormat): string;
export declare function openSavePanel(options: SavePanelOptions): Overlay;
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