/**
 * Font control. The trigger is a compact field like any other, but activating it
 * takes over the *entire* side editor with a full-height font browser: search,
 * an editable live-preview line, and a size slider. Every card renders in its own
 * typeface, and picking one applies immediately so the popup preview on the right
 * updates live while you keep browsing.
 */
export declare function FontPicker({ value, onChange, }: {
    /** The stored `fontFamily` (undefined = default). */
    value?: string;
    /** Emits the new id, or undefined for the default. */
    onChange: (fontId: string | undefined) => void;
}): import("react").JSX.Element;