nodejs array buffer to buffer

// Step 1: Create an ArrayBuffer from the source Node.js Buffer
const sourceBuffer = Buffer.from('Hello, world!');
const sourceArrayBuffer = sourceBuffer.buffer;

// Step 2: Create a new Node.js Buffer from the ArrayBuffer
const destinationBuffer = Buffer.from(sourceArrayBuffer);

// Optional: Check if the contents are the same
const contentsMatch = Buffer.compare(sourceBuffer, destinationBuffer) === 0;

// Result: The contents of the sourceBuffer are now in the destinationBuffer