next.config.ts

import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  // Use Turbopack with experimental WASM support
  turbopack: {},

  // Enable WebAssembly support for tfhe.js FHE library (fallback for webpack)
  webpack: (config, { isServer, webpack }) => {
    // Enable async WebAssembly with proper layers
    config.experiments = {
      ...config.experiments,
      asyncWebAssembly: true,
      syncWebAssembly: true,
      layers: true,
    };

    // Handle WASM files
    config.module.rules.push({
      test: /\.wasm$/,
      type: "asset/resource",
    });

    // Ignore WASM module resolution errors
    config.plugins.push(
      new webpack.IgnorePlugin({
        resourceRegExp: /^wbg$/,
      })
    );

    // Exclude tfhe entirely from server-side bundling since WASM only works in browser
    if (isServer) {
      config.externals = [...(config.externals || []), "tfhe"];
    } else {
      // Client-side: resolve WASM imports properly
      config.resolve.fallback = {
        ...config.resolve.fallback,
        fs: false,
        path: false,
        crypto: false,
      };
    }

    return config;
  },

  // Ensure tfhe is only loaded on the client side
  serverExternalPackages: ["tfhe"],

  // Enable experimental features for WASM
  experimental: {
    serverActions: {
      bodySizeLimit: "10mb",
    },
  },
};

export default nextConfig;