Writable Streams: Implementation
Explore how to implement custom Writable streams in Node.js by extending the Writable class and overriding the _write() method. Understand object mode for handling data as objects, manage backpressure with highWaterMark, and learn both classical and simplified construction approaches for practical stream creation.
We'll cover the following...
Implementing Writable streams
We can implement a new Writable stream by inheriting the Writable class and providing an implementation for the _write() method. Let’s try to do it immediately while discussing the details along the way.
First, let’s build a Writable stream that receives objects in the following format:
{path: <path to a file>content: <string or buffer>}
For each objects, our stream has to save the content property into a file created at the given path. We can immediately see that the inputs of our ...