const { MongoClient } = require('mongodb');

const url = 'mongodb://localhost/?replicaSet=replset&authSource=admin&readPreference=secondaryPreferred&retryWrites=true';

(async () => {
    const client = await MongoClient.connect(url , { useUnifiedTopology: true })
    const db = await client.db('media-providers');

    try {
        await db.collection('tests', { strict: true });
    } catch (err) {
        await db.createCollection('tests');
    }

    try {
        const result = await db.command({
            collMod: 'tests',
            validator: {
                $jsonSchema: {
                    type: 'object',
                    properties: {
                        score: { type: 'number' }
                    }
                }
            }
        });
        console.log('result', result);
    } catch (err) {
        console.error(err);
    }
})();

MongoError: not master
    at MessageStream.messageHandler (/home/dev/node_modules/mongodb/lib/cmap/connection.js:261:20)
    at MessageStream.emit (events.js:210:5)
    at processIncomingData (/home/dev/node_modules/mongodb/lib/cmap/message_stream.js:144:12)
    at MessageStream._write (/home/dev/node_modules/mongodb/lib/cmap/message_stream.js:42:5)
    at doWrite (_stream_writable.js:431:12)
    at writeOrBuffer (_stream_writable.js:415:5)
    at MessageStream.Writable.write (_stream_writable.js:305:11)
    at TLSSocket.ondata (_stream_readable.js:727:22)
    at TLSSocket.emit (events.js:210:5)
    at addChunk (_stream_readable.js:309:12) {
  operationTime: Timestamp { _bsontype: 'Timestamp', low_: 30, high_: 1591872518 },
  ok: 0,
  code: 10107,
  codeName: 'NotMaster',
  '$clusterTime': {
    clusterTime: Timestamp { _bsontype: 'Timestamp', low_: 2, high_: 1591872519 },
    signature: { hash: [Binary], keyId: [Long] }
  },
  name: 'MongoError'
}