Adapterهای Backend

import express from "express";
import { createGuard, securityHeaders } from "@bana-ui/core/server";
import { banaExpress, banaValidate } from "@bana-ui/core/server/express";
import schema from "./signup.schema.json" with { type: "json" };   // the same file the browser renders

const guard = createGuard({ secret: process.env.BANA_SECRET });   // 32+ random characters

const app = express();
app.use((req, res, next) => { res.set(securityHeaders()); next(); });
app.use(express.json());
app.use(banaExpress(guard));                                      // CSRF + Idempotency-Key + Origin

app.get("/", (req, res) => res.send(`<meta name="csrf-token" content="${req.bana.csrfToken}">…`));
app.post("/api/signup", banaValidate(guard, schema), (req, res) => {
  const user = save(req.bana.values);        // cleaned: Latin digits, ی/ک, hidden fields omitted
  res.status(201).json({ ok: true, id: user.id });
});                                           // invalid → 422 { errors: { field: message } } shown under each field

// Next.js / Hono / Deno / Bun
export const POST = withBana(guard, { session: (req) => sidFromCookie(req), schema },
  async (req, { values }) => Response.json({ ok: true }, { status: 201 }));

// Fastify
await app.register(banaFastify, { guard });
app.post("/api/signup", { preValidation: banaFastify.validate(guard, schema) }, async (req) => ({ ok: true }));