import type { BundledLanguage } from "shiki";
export declare const SUPPORTED_LANGUAGES: readonly ["typescript", "javascript", "python", "php", "java", "go", "rust", "cpp", "c", "csharp", "ruby", "swift", "kotlin", "sql", "html", "css", "json", "yaml", "markdown", "bash", "shell"];
export type SupportedLanguage = (typeof SUPPORTED_LANGUAGES)[number];
/**
 * Detect language from file extension
 */
export declare function detectLanguageFromExtension(filename: string): BundledLanguage;
/**
 * Highlight code with syntax highlighting
 *
 * @param code - Code to highlight
 * @param language - Programming language
 * @param theme - Color theme (default: 'dark-plus' to match VS Code)
 * @returns HTML string with syntax highlighting
 */
export declare function highlightCode(code: string, language?: BundledLanguage, theme?: "dark-plus" | "light-plus"): Promise<string>;
/**
 * Highlight a diff with syntax highlighting
 * Preserves +/- indicators while applying syntax highlighting
 *
 * @param diff - Unified diff string
 * @param language - Programming language
 * @param theme - Color theme
 * @returns HTML string with syntax highlighted diff
 */
export declare function highlightDiff(diff: string, language?: BundledLanguage, theme?: "dark-plus" | "light-plus"): Promise<string>;
/**
 * Check if a language is supported
 */
export declare function isLanguageSupported(language: string): language is BundledLanguage;