/**
 * @license
 * Copyright 2023 Nuraly, Laabidi Aymen
 * SPDX-License-Identifier: MIT
 */
/**
 * Format timestamp for display
 * Shows time only (e.g., "5:30 PM") for today, or date + time for older messages
 */
export declare function formatTimestamp(timestamp: Date | string | undefined): string;
/** Escape HTML entities for safe insertion into innerHTML */
export declare function escapeHtml(text: string): string;
/** Map a language identifier to a human-readable display name */
export declare function getLangDisplayName(lang: string): string;
/**
 * Render a subset of Markdown to HTML.
 *
 * Supports: code blocks, inline code, headings (h1-h3), bold, italic,
 * links, unordered lists, and paragraph wrapping.  The input is HTML-escaped
 * first so the result is safe for innerHTML.
 */
export declare function renderMarkdown(text: string): string;
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