/**
 * Renders a text element with optional wrapping.
 * 1) If the text ends with a parenthetical ("... (...)"), and is long (> 36), split conservatively into two lines.
 * 2) Otherwise, if maxWidthPx is provided and the estimated width exceeds it, split into two balanced lines by words.
 * 3) Else render as a single line.
 */
export declare function renderWrappedText(text: string, x: number, y: number, className: string, lineHeight?: string, maxWidthPx?: number, approxCharWidthPx?: number): string;
/**
 * Renders a Y-axis label that wraps to fit the chart height and is rotated -90 degrees around (x, yCenter).
 * The wrapping width is derived from the available chart height.
 */
export declare function renderRotatedWrappedYAxisLabel(text: string, x: number, yCenter: number, chartHeightPx: number, className?: string, lineHeight?: string, approxCharWidthPx?: number, paddingPx?: number): string;
/**
 * Strip common Markdown/HTML syntax to produce safe plaintext for widget fields.
 *
 * Goals:
 * - Replace links/images with their human-readable text (drop URLs)
 * - Remove emphasis markers, code fences/spans, headings, blockquotes, list bullets
 * - Remove HTML tags
 * - Normalize whitespace
 * - If the result is a bare URL or empty, return an empty string
 */
export declare function stripMarkdownToPlaintext(input: string): string;
/**
 * Estimates the final dimensions (width and height) of a text element after wrapping.
 * This function uses the same wrapping logic as CanvasImpl.wrapText for accurate prediction.
 *
 * @returns An object with the total height and maximum width of the wrapped text.
 */
export declare function estimateWrappedTextDimensions(text: string, maxWidthPx: number, fontSize?: number, lineHeight?: number): {
    height: number;
    maxWidth: number;
};
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