import { type SourceLine } from "./lines.js";
export interface InitialStatement {
    kind: "initial";
    line: number;
    target: string;
    targetColumn: number;
}
export interface TransitionStatement {
    kind: "transition";
    line: number;
    source: string;
    sourceColumn: number;
    /** `null` = `[*]` (the final pseudo-state of the enclosing block). */
    target: string | null;
    targetColumn: number;
    /** Text after `:`; `null` when absent or empty. */
    label: string | null;
    labelColumn: number;
}
export interface DescriptionStatement {
    kind: "description";
    line: number;
    id: string;
    idColumn: number;
    description: string;
}
export interface ChoiceStatement {
    kind: "choice";
    line: number;
    id: string;
    idColumn: number;
}
export interface BlockStatement {
    kind: "block";
    line: number;
    endLine: number;
    id: string;
    idColumn: number;
    /** From `state "desc" as X {`. */
    description: string | null;
    /** One entry without `--`; two or more with `--` (parallel regions), in source order. */
    regions: Statement[][];
    hasDividers: boolean;
}
export interface NoteStatement {
    kind: "note";
    line: number;
    id: string;
    idColumn: number;
}
/** A bare id on its own line — mermaid's plain state statement (declares the state in the scope). */
export interface DeclarationStatement {
    kind: "declaration";
    line: number;
    id: string;
    idColumn: number;
}
export interface IgnoredStatement {
    kind: "ignored";
    line: number;
    keyword: "direction" | "classDef" | "class";
}
export type Statement = InitialStatement | TransitionStatement | DescriptionStatement | ChoiceStatement | BlockStatement | NoteStatement | DeclarationStatement | IgnoredStatement;
export interface Diagram {
    headerLine: number;
    statements: Statement[];
}
export declare function parseDiagram(lines: SourceLine[]): Diagram;