Likewise skeptical, but I have been super impressed with it. I just got in to the technical preview, and worked through a specific task I needed to do (involving mongoose, a mongo aggregate query, a few loops, some date functions) and started by adding a comment above each line. It helped a lot actually, felt like a collab.

I'll reproduce a generic example I sent a friend.

Prompt:

    const redis = require('redis');

    // Create a redis client

Copilot suggested:

    const client = redis.createClient();

I accepted it and moved 2 lines down, prompt:

    // Get the current count from redis

Copilot suggested a start to the operation:

    client.get('count', (err, count) => {

I accepted it, and Copilot continued:

      if (err) {
        console.log(err);
        return;
      }

      // If there is no count, set it to 0
      if (!count) {
        count = 0;
      }

      // Increment the count
      count++;

      // Set the new count in redis
      client.set('count', count);
  
      // Log the new count
      console.log(count);
    }