import { Plugin, ProseMirror, Schema } from '../../prosemirror';
import { CodeBlockNodeType } from '../../schema';
export declare class CodeBlockState {
    active: boolean;
    content?: string;
    element?: HTMLElement;
    language?: string;
    private pm;
    private changeHandlers;
    private activeCodeBlock?;
    constructor(pm: PM);
    subscribe(cb: CodeBlockStateSubscriber): void;
    unsubscribe(cb: CodeBlockStateSubscriber): void;
    updateLanguage(language: string): void;
    splitCodeBlock(): boolean;
    private deleteCharBefore();
    private lastCharIsNewline(node);
    private cursorIsAtTheEndOfLine();
    private update();
    private activeCodeBlockElement();
    private nodeStartPos();
    private activeCodeBlockNode();
}
export interface S extends Schema {
    nodes: {
        code_block?: CodeBlockNodeType;
    };
}
export interface PM extends ProseMirror {
    schema: S;
}
export declare type CodeBlockStateSubscriber = (state: CodeBlockState) => any;
declare var _default: Plugin<CodeBlockState>;
export default _default;