How to emit/pipe array values as a readable stream in node.js?

Question

What is the best way to create a readable stream from an array and pipe values to a writable stream? I have seen substack\'s example using setInterval and I can implement that s

Answer 1

tl;dr;

This is a LIFO solution. Array.prototype.pop() has similar behavior to shift but applied to the last element in an array.

const items = [1,2,3]
const stream = new Readable({
  objectMode: true,
  read() {
    const item = items.pop()
    if (!item) {
      this.push(null);
      return;
    }
    this.push(item)
  },
})