import { LRLanguage } from '@codemirror/language';
export interface BibtexParseState {
    inEntry: boolean;
    entryType: string;
    braceDepth: number;
    inField: boolean;
    inValue: boolean;
    valueType: 'quoted' | 'braced' | 'literal' | null;
    inMath: boolean;
    mathDelimiter: '$$' | '$' | null;
}
export declare const parser: LRLanguage;
export declare function isEntryType(type: string): boolean;
export declare function getFieldType(fieldName: string): 'required' | 'optional' | 'unknown';
export interface RootNode {
    type: 'root';
    children: (TextNode | BlockNode)[];
}
export interface TextNode {
    type: 'text';
    parent: RootNode;
    text: string;
    whitespacePrefix: string;
}
export interface BlockNode {
    type: 'block';
    command: string;
    block?: CommentNode | PreambleNode | StringNode | EntryNode;
    parent: RootNode;
    whitespacePrefix: string;
}
export interface CommentNode {
    type: 'comment';
    parent: BlockNode;
    raw: string;
    braces: number;
    parens: number;
}
export interface PreambleNode {
    type: 'preamble';
    parent: BlockNode;
    raw: string;
    braces: number;
    parens: number;
}
export interface StringNode {
    type: 'string';
    parent: BlockNode;
    raw: string;
    braces: number;
    parens: number;
}
export interface EntryNode {
    type: 'entry';
    parent: BlockNode;
    wrapType: '{' | '(';
    key?: string;
    keyEnded?: boolean;
    fields: FieldNode[];
}
export interface FieldNode {
    type: 'field';
    parent: EntryNode;
    name: string;
    whitespacePrefix: string;
    value: ConcatNode;
    hasComma: boolean;
}
export interface ConcatNode {
    type: 'concat';
    parent: FieldNode;
    concat: (LiteralNode | BracedNode | QuotedNode)[];
    canConsumeValue: boolean;
    whitespacePrefix: string;
}
export interface LiteralNode {
    type: 'literal';
    parent: ConcatNode;
    value: string;
}
export interface BracedNode {
    type: 'braced';
    parent: ConcatNode;
    value: string;
    depth: number;
}
export interface QuotedNode {
    type: 'quoted';
    parent: ConcatNode;
    value: string;
    depth: number;
}
export type Node = RootNode | TextNode | BlockNode | EntryNode | CommentNode | PreambleNode | StringNode | FieldNode | ConcatNode | LiteralNode | BracedNode | QuotedNode;