import type { Node } from 'web-tree-sitter';
const TYPE = 'comma' as const;



// ================================================================
// ================================================================
//
//                           CommaNode
//
//        GraphQL comma node
//
// ================================================================
// ================================================================


/**
 * Represents a comma in the GraphQL AST.
 * 
 */
export interface CommaNode extends Node {
  type: typeof TYPE;
}


// ================================================================
// ================================================================
//
//                           Type Guard
//
// ================================================================
// ================================================================


/**
 * Type guard to check if a node is a {@link CommaNode}.
 * 
 * @param node - The node to check
 * @returns True if the node is a {@link CommaNode}
 * 
 * @example
 * ```typescript
 * if (isCommaNode(node)) {
 *   // TypeScript now knows node is CommaNode
 *   console.log(node.type); // 'comma'
 * }
 * ```
 */
export function isCommaNode(node: unknown): node is CommaNode {
  return (node as any)?.type === TYPE;
}


// ================================================================
// ================================================================
//
//                           Constructor
//
// ================================================================
// ================================================================


/**
 * Creates a new {@link CommaNode} with the specified properties.
 * 
 * @returns A new {@link CommaNode}
 * 
 * @example
 * ```typescript
 * const node = CommaNode({
 *   // properties...
 * });
 * ```
 */
export function CommaNode(props: Omit<CommaNode, 'type'>): CommaNode {
  return {
    type: TYPE,
    ...props
  };
}