import type { NodeDefinition, NodeHandlePosition, NodeInstance, NodeShapeKind, NodeShapeStyle } from "./types";
export interface ShapePoint {
    x: number;
    y: number;
}
export interface NodeVisualSize {
    width: number;
    height: number;
}
export interface NodeShapePreset extends NodeVisualSize {
    kind: NodeShapeKind;
    label: string;
    minWidth: number;
    minHeight: number;
}
export declare const nodeShapeKinds: readonly NodeShapeKind[];
export declare const nodeShapePresets: Readonly<Record<NodeShapeKind, NodeShapePreset>>;
export declare function getNodeShapePath(kind: NodeShapeKind): string;
export declare function getNodeShapeDecorationPaths(kind: NodeShapeKind): readonly string[];
export declare function getNodeShape(node?: NodeInstance, definition?: NodeDefinition): NodeShapeKind | undefined;
/** Returns the higher-contrast foreground for a hexadecimal background color. */
export declare function getReadableTextColor(background?: string, light?: string, dark?: string): string | undefined;
export declare function getNodeShapeStyle(node?: NodeInstance, definition?: NodeDefinition): NodeShapeStyle;
export declare function getNodeVisualSize(node: NodeInstance, definition?: NodeDefinition): NodeVisualSize;
export declare function getNodeShapeBoundaryPoint(kind: NodeShapeKind, position: NodeHandlePosition, offset?: number): ShapePoint;
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