import type { LocalFontOptions, FontResult, AdjustFontFallback } from "../lib/core/types.js";
/**
 * Get fallback metrics from font file
 */
export declare function getFallbackMetricsFromFontFile(font: any, category?: string): AdjustFontFallback;
/**
 * Pick the best font file for fallback generation
 */
export declare function pickFontFileForFallbackGeneration<T extends {
    style?: string;
    weight?: string;
}>(fontFiles: T[]): T;
/**
 * Validate local font function call
 */
export declare function validateLocalFontFunctionCall(functionName: string, fontData: any): {
    src: Array<{
        path: string;
        weight?: string;
        style?: string;
        ext: string;
        format: string;
    }>;
    display: string;
    weight?: string;
    style?: string;
    fallback?: string[];
    preload: boolean;
    variable?: string;
    adjustFontFallback?: string | false;
    declarations?: Array<{
        prop: string;
        value: string;
    }>;
};
/**
 * Create a local font configuration
 */
export declare function localFont(options: LocalFontOptions): FontResult;
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