My next.config.ts is as follows:

import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  // Webpack configuration for non-Turbopack builds
  webpack: (config) => {
    config.module.rules.push({
      test: /\.ya?ml$/,
      use: "yaml-loader",
    });
    return config;
  },
  
  // Turbopack configuration
  turbopack: {
    rules: {
      "**/*.ya?ml": [{
        loader: "yaml-loader",
        options: {},
      }]
    },
  }
};

export default nextConfig;

As is on the documentation (i think)? yaml-loader certainly is as working.

When I run dev as webpack it works

But on turbopack it says:

Build error
Unknown module type
./src/lib/translations/en.yaml

Unknown module type
This module doesn't have an associated type. Use a known file extension, or register a loader for it.