How can you create a custom Transform stream in Node.js?
By extending the Transform class from the stream module and implementing the _transform method to define how data should be transformed.
You can define a class that extends the class and implement the method to specify how the data is transformed.
You can now use your custom Transform stream by piping data through it:
The _transform(chunk, encoding, callback) method:
Handles the transformation logic for each chunk of data.
chunk is the current piece of data being transformed.
callback is called when the transformation is complete.
The _flush(callback) method:
Optional: It allows you to perform any cleanup or final transformations when the stream ends.