opentelemetry does not work with multiple targets

[pawelbaranski]

I have behavior that seems like a bug. Having pino-opentelemetry-transport as one of multiple targets breaks the app, unless I specify options, even empty one.

this does not work

const targets: any = [
  {
    target: 'pino/file',
    level: LOG_LEVEL_FILE,
    options: { destination: path.join(`${ROOT_DIR}/logs`, 'app.log'), mkdir: true },
  },
  {
    target: 'pino-pretty',
    level: LOG_LEVEL_CONSOLE,
    options: { colorize: true },
  },
  {
    target: 'pino-opentelemetry-transport',
    level: LOG_LEVEL_OTEL,
  }
];

const logger = pino(
  {
    transport: {
      targets,
    },
  }
);

When I run the app I have error

      throw er; // Unhandled 'error' event
      ^

TypeError: Cannot destructure property 'severityNumberMap' of 'undefined' as it is undefined.
    at module.exports (/Users/myuser/workspace/project/myapp/backend/node_modules/pino-opentelemetry-transport/lib/pino-opentelemetry-transport.js:17:36)
    at /Users/myuser/workspace/project/myapp/backend/node_modules/pino/lib/worker.js:83:28
    at async Promise.all (index 2)
    at async module.exports (/Users/myuser/workspace/project/myapp/backend/node_modules/pino/lib/worker.js:81:15)
    at async start (/Users/myuser/workspace/project/myapp/backend/node_modules/thread-stream/lib/worker.js:67:17)
Emitted 'error' event on ThreadStream instance at:
    at Immediate.<anonymous> (/Users/myuser/workspace/project/myapp/backend/node_modules/thread-stream/index.js:369:12)
    at process.processImmediate (node:internal/timers:485:21)

Node.js v22.17.1

When I simply add empty options: {} to pino-opentelemetry-transport, it starts to work.

{
    target: 'pino-opentelemetry-transport',
    level: LOG_LEVEL_OTEL,
    options: {}
}

and it logs properly to all the 3 targets.