/**
 * C# expression visitor — Expr IR → C# source fragments.
 */
import { Expr, TypeRegistry } from "../../ir/expansion.js";
import { ExprVisitor } from "../../ir/visitor.js";
export declare class CSharpExprVisitor implements ExprVisitor {
    registry?: TypeRegistry;
    constructor(registry?: TypeRegistry);
    visitExpr(expr: Expr): string;
    private visitConstruct;
    private visitVariant;
    private visitArray;
    private escapeString;
}