export declare const MERMAID_PREVIEW_MIN_HEIGHT = 360;
export declare const MERMAID_PREVIEW_MAX_HEIGHT = 500;
export declare function parsePositiveNumber(value: unknown): number;
export declare function getMermaidDiagramKind(code: string): string;
export declare function estimateMermaidPreviewHeight(code: string): number;
export declare function clampMermaidPreviewHeight(height: number, minHeight?: number, maxHeight?: number | null): number;