/**
 * Loads an icon font using the FontFace API.
 * Silently skips loading in environments where FontFace is unavailable (e.g. Node.js test env).
 *
 * @param fontFamily - The CSS font-family name (e.g. "Material Symbols Outlined")
 * @param url - URL to the font file
 * @returns Promise that resolves when the font is loaded, or immediately if not supported
 */
export declare function loadIconFont(fontFamily: string, url: string): Promise<void>;
/**
 * Checks if a font family is already available in the document.
 * Returns true if loaded, false otherwise (including in non-browser environments).
 */
export declare function isFontLoaded(fontFamily: string): boolean;
/**
 * Waits for the document to finish loading all fonts.
 * Safe to call in non-browser environments (resolves immediately).
 */
export declare function waitForFontsReady(): Promise<void>;