import type { TruncationMode } from '../../typography/text-ellipsis/TextEllipsis.js';
import type { SankeyState } from './types/sankey-state.js';
export declare const DISPLAY_NAME = "SankeyChart";
export declare const SANKEY_CHART_ARIA_LABEL = "Sankey Chart";
export declare const INITIAL_SANKEY_STATE: SankeyState;
export declare const DEFAULT_TRUNCATION_MODE: TruncationMode;
export declare const DEFAULT_CHART_HEIGHT = 300;
/** d3-sankey node geometry defaults (visual tuning deferred). */
export declare const DEFAULT_NODE_WIDTH = 20;
export declare const DEFAULT_NODE_PADDING = 20;
export declare const LAYOUT_MARGIN = 4;
export declare const FALLBACK_NODE_COLOR = "#888888";
export declare const NODE_BORDER_RADIUS = 4;
export declare const INSIDE_LABEL_PADDING = 4;
export declare const INSIDE_LABEL_WIDTH_RATIO = 0.8;
export declare const MAX_SIDE_LABEL_WIDTH_RATIO = 0.2;
export declare const DEFAULT_LINK_OPACITY = 0.3;
export declare const HIGHLIGHT_LINK_OPACITY = 0.6;
export declare const DIM_CANVAS_ALPHA = 0.5;
export declare const COLUMN_HEADER_HEIGHT = 40;
export declare const COLUMN_LABEL_HORIZONTAL_PADDING = 16;
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