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      • Logs Events

      Log events are distributed by Modern.js as events of type log.

      Built-in Events

      Based on server-side runtime logic, Modern.js provides the following log events:

      StageMessageLevel
      RENDER_HTMLApp Render To HTMLerror
      RENDER_STREAMAn error occurs during streaming SSRerror
      RENDER_SHELLAn error occurs during streaming render shellerror

      Built-in Monitor

      In Modern.js, log events are handled by LoggerMonitor, which outputs logs to the console.

      Info

      The built-in LoggerMonitor depends on the rslog library.

      For example, intentionally throwing an error in the project:

      routes/page.tsx
      import './index.css';

const Index = () => <div className="container-box">{a}</div>;

export default Index;

      If running normally, you can see the following output in the console:

      > Local:    http://localhost:8080/
> press h + enter to show shortcuts

error   SSR Error - App Prerender, error = ReferenceError: a is not defined
    at Index (/somepath/page.tsx:3:1)