/**
 * State Diagram AST Types
 *
 * Represents the structure of a Mermaid state diagram.
 */
/**
 * Direction of the state diagram layout
 */
export type StateDirection = 'TB' | 'BT' | 'LR' | 'RL';
/**
 * Type of state
 */
export type StateType = 'default' | 'fork' | 'join' | 'choice' | 'divider';
/**
 * A note attached to a state
 */
export interface StateNote {
    /** Position relative to the state */
    position: 'left of' | 'right of';
    /** Note text content */
    text: string;
}
/**
 * A state definition
 */
export interface StateDefinition {
    /** State ID */
    id: string;
    /** State type */
    type: StateType;
    /** State description/label */
    description?: string | string[];
    /** Nested states (for composite states) */
    doc?: StateStatement[];
    /** Note attached to this state */
    note?: StateNote;
    /** CSS classes applied to this state */
    classes?: string[];
}
/**
 * A transition between states
 */
export interface StateTransition {
    /** Source state */
    state1: StateDefinition;
    /** Target state */
    state2: StateDefinition;
    /** Transition label/description */
    description?: string;
}
/**
 * A class definition for styling
 */
export interface StateClassDef {
    /** Class name */
    id: string;
    /** CSS styles */
    classes: string;
}
/**
 * A style definition
 */
export interface StateStyleDef {
    /** State ID(s) to style */
    id: string;
    /** CSS styles */
    styleClass: string;
}
/**
 * Apply class to state(s)
 */
export interface StateApplyClass {
    /** State ID(s) */
    id: string;
    /** Class name to apply */
    styleClass: string;
}
/**
 * Direction statement
 */
export interface StateDirectionStmt {
    stmt: 'dir';
    value: StateDirection;
}
/**
 * Click handler
 */
export interface StateClick {
    /** State ID */
    id: string;
    /** URL to navigate to */
    url?: string;
    /** Tooltip text */
    tooltip?: string;
}
/**
 * Union of all statement types
 */
export type StateStatement = {
    stmt: 'state';
    state: StateDefinition;
} | {
    stmt: 'relation';
    transition: StateTransition;
} | {
    stmt: 'classDef';
    classDef: StateClassDef;
} | {
    stmt: 'style';
    style: StateStyleDef;
} | {
    stmt: 'applyClass';
    applyClass: StateApplyClass;
} | {
    stmt: 'dir';
    value: StateDirection;
} | {
    stmt: 'click';
    click: StateClick;
};
/**
 * State Diagram AST
 */
export interface StateDiagramAST {
    /** Diagram type identifier */
    type: 'state';
    /** Diagram direction */
    direction: StateDirection;
    /** All states in the diagram (flattened) */
    states: Map<string, StateDefinition>;
    /** All transitions */
    transitions: StateTransition[];
    /** Class definitions */
    classDefs: Map<string, StateClassDef>;
    /** Style definitions */
    styles: StateStyleDef[];
    /** Class applications */
    classApplications: StateApplyClass[];
    /** Click handlers */
    clicks: StateClick[];
    /** Accessibility title */
    title?: string;
    /** Accessibility description */
    accDescription?: string;
}
/**
 * Create an empty State Diagram AST
 */
export declare function createEmptyStateDiagramAST(): StateDiagramAST;
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