import type { Plugin } from 'vite';
/**
 * Vite plugin that implements security hardening for the dev server:
 * - Generates a CSRF session token (when security hardening is enabled)
 * - Validates the token on cross-origin requests to proxied platform routes
 * - Sets the Access-Control-Allow-Private-Network header selectively
 *
 * Ports the security logic from packages/cli/src/dev/fastify/server.ts
 * to Vite's middleware stack.
 */
export declare function dtSecurityVitePlugin(): Plugin;