import { Plugin, PluginKey } from 'prosemirror-state';
import { DecorationSet } from 'prosemirror-view';
export declare const codeHighlightKey: PluginKey<DecorationSet>;
/** Languages offered in the code block language picker. '' = auto-detect. */
export declare const CODE_LANGUAGES: {
    value: string;
    label: string;
}[];
/** Syntax highlighting for code blocks, recomputed on document changes. */
export declare function codeHighlightPlugin(): Plugin<DecorationSet>;