import type { TruncationMode } from '../../../../../typography/text-ellipsis/TextEllipsis.js';
/**
 * Truncates text using the header font weight (500) map.
 * Used by Header and SeriesHeader components.
 */
export declare const getHeaderTruncatedText: (text: string | undefined | null, maxWidth: number | undefined, truncationMode: TruncationMode) => string;
/**
 * Truncates text using the header font weight (500) map, distributing content
 * across multiple lines. Used by Header and SeriesHeader components for
 * multi-line start/middle truncation.
 *
 * Both 'start' and 'middle' modes use explicit `\n` line breaks (respected by
 * `white-space: pre-line`) so browser word-break heuristics are bypassed entirely.
 * This guarantees consistent output for text with or without natural word boundaries.
 */
export declare const getHeaderTruncatedTextMultiLine: (text: string | undefined | null, availableWidth: number | undefined, maxLines: number, truncationMode: TruncationMode) => string;
//# sourceMappingURL=text-truncation-header.d.ts.map