export type FontFormat = 'ttf' | 'otf' | 'woff' | 'woff2';
export declare function fontFormat(src: string): FontFormat;
/**
 * Pick the src to actually load for a parsed font entry.
 *
 * - When `preferStatic` is set (takumi), prefers the full static satoriSrc over a subset WOFF2
 *   primary src. @nuxt/fonts CSS often ships only the latin subset for a family, so using the
 *   subset would hide non-latin glyphs (devanagari, CJK) the static file covers.
 * - Variable fonts (entries carrying `weightRange`) are an exception: the per-weight static
 *   `satoriSrc` would discard the wght axis, leaving the runtime to stair-step requested
 *   weights through whatever weights fontless happened to download (e.g. requested 400 maps
 *   to the closest available static, often 100 or 700, with a hard jump in the middle).
 *   Keep the variable WOFF2 primary src so takumi can vary the axis at render time.
 * - Otherwise, uses the primary src when the renderer can parse its format, falling back to
 *   satoriSrc as a static alternative when the primary format is unsupported (satori + WOFF2).
 *
 * Returns null when no src on this entry can be parsed by the renderer.
 */
export declare function selectFontSource(f: {
    src: string;
    satoriSrc?: string;
    weightRange?: [number, number];
}, supportedFormats: Set<FontFormat>, preferStatic: boolean): {
    src: string;
    isStaticFallback: boolean;
} | null;