Next.js

const nextConfig = {
  experimental: {
    instrumentationHook: true,
  },
  // OTel パッケージの警告を無視する
  // https://github.com/open-telemetry/opentelemetry-js/issues/4173#issuecomment-1822938936
  webpack: (
    config,
    { buildId, dev, isServer, defaultLoaders, nextRuntime, webpack },
  ) => {
    if (isServer) {
      config.ignoreWarnings = [{ module: /opentelemetry/ }];
    }
    return config;
  },
};

module.exports = nextConfig;

export async function register() {
  if (process.env.NEXT_RUNTIME === 'nodejs') {
    const { init } = await import('@hyperdx/node-opentelemetry');
    init({
      apiKey: '<YOUR_INGESTION_API_KEY>', // optionally configure via `HYPERDX_API_KEY` env var
      service: '<YOUR_SERVICE_NAME>', // optionally configure via `OTEL_SERVICE_NAME` env var
      additionalInstrumentations: [], // optional, default: []
    });
  }
}