import type { FontResult } from "../lib/core/types.js";
import type { GoogleFontOptions } from "../lib/core/google-font-options.js";
import type { GoogleFontFamily } from "./font-families.js";
/**
 * Service for managing Google Fonts at runtime
 */
export declare class GoogleFontService {
    private loadedFonts;
    /**
     * Load a Google Font and return a signal with the result
     */
    loadFont<T extends GoogleFontFamily>(fontFamily: T, options?: GoogleFontOptions<T, any, any, any, any>): import("@angular/core").WritableSignal<FontResult>;
    /**
     * Get all loaded fonts
     */
    getAllLoadedFonts(): import("@angular/core").Signal<FontResult[]>;
    /**
     * Check if a font is loaded
     */
    isFontLoaded(fontFamily: string, options?: GoogleFontOptions): boolean;
    /**
     * Preload multiple fonts
     */
    preloadFonts(fontConfigs: Array<{
        family: GoogleFontFamily;
        options?: GoogleFontOptions<any, any, any, any, any>;
    }>): Promise<void>;
    /**
     * Get CSS variables for all loaded fonts (useful for Tailwind)
     */
    getCSSVariables(): import("@angular/core").Signal<Record<string, string>>;
    /**
     * Generate CSS class string for all loaded fonts
     */
    getFontClasses(): import("@angular/core").Signal<string>;
}
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