import { Extension } from "@codemirror/next/state";
interface SpecialCharConfig {
    render?: ((code: number, description: string | null, placeholder: string) => HTMLElement) | null;
    specialChars?: RegExp;
    addSpecialChars?: RegExp | null;
}
export declare function highlightSpecialChars(config?: SpecialCharConfig): Extension;
export {};
//# sourceMappingURL=special-chars.d.ts.map