/**
 * Google Font metadata structure
 */
interface GoogleFontMetadata {
    weights: string[];
    styles: string[];
    subsets: string[];
    axes?: Array<{
        tag: string;
        min: number;
        max: number;
        defaultValue: number;
    }>;
}
/**
 * Type for the font data JSON
 */
type FontDataMap = {
    [fontFamily: string]: GoogleFontMetadata;
};
declare const googleFontsMetadata: FontDataMap;
/**
 * Get metadata for a specific Google Font
 */
export declare function getFontMetadata(fontFamily: string): GoogleFontMetadata | undefined;
/**
 * Check if a font exists in Google Fonts
 */
export declare function isFontAvailable(fontFamily: string): boolean;
/**
 * Get all available Google Fonts
 */
export declare function getAllFontFamilies(): string[];
/**
 * Validate font weights against available weights
 */
export declare function validateWeights(fontFamily: string, requestedWeights: number[] | "variable"): string[];
/**
 * Normalize subsets (TypeScript types ensure validity at compile-time)
 */
export declare function validateSubsets(fontFamily: string, requestedSubsets: string[]): string[];
/**
 * Normalize styles (TypeScript types ensure validity at compile-time)
 */
export declare function validateStyles(fontFamily: string, requestedStyles: string[]): string[];
export { googleFontsMetadata };
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