Next.js

Mount the Files gateway in the Next.js App Router. createRouteHandler returns { GET, POST, PUT }, and the same handler runs on Node and the Edge runtime.

files-sdk/next mounts a createFilesRouter in the Next.js App Router. createRouteHandler returns { GET, POST, PUT } — GET serves downloads, POST the JSON verbs, and PUT the upload byte path. The handler is Web-native (Request/Response, crypto.subtle, ReadableStream), so the same route runs on Node and the Edge runtime.

app/api/files/route.ts

import { createFiles } from "files-sdk";
import { s3 } from "files-sdk/s3";
import { createFilesRouter } from "files-sdk/api";
import { createRouteHandler } from "files-sdk/next";

const router = createFilesRouter({
  files: createFiles({ adapter: s3({ bucket: "uploads" }) }),
  allowedOrigins: ["https://app.example.com"],
  authorize: async ({ req }) => {
    /* throw to deny, or return a per-user constraint — see /ui/server/authorization */
  },
});

export const { GET, POST, PUT } = createRouteHandler(router);

That one route backs every client binding — the React hook, Svelte, and Vue. See the gateway options for the full configuration, and lock it down with authorize before shipping.