node.js - How to convert buffer to stream in Nodejs

Question

I confront with a problem about converting buffer into stream in Nodejs.Here is the code:

var fs = require('fs');
var b = Buffer([80,80,80,80]);
var readStream = fs.createReadStream({path:b});

The code raise an exception:

TypeError: path must be a string or Buffer

However the document of Nodejs says that Buffer is acceptable by fs.createReadStream().

fs.createReadStream(path[, options])
  path <string> | <Buffer> | <URL>
  options <string> | <Object>

Anybody could answer the question? Thanks very much!

Answer 1

NodeJS 8+ ver. convert Buffer to Stream

const { Readable } = require('stream');

/**
 * @param binary Buffer
 * returns readableInstanceStream Readable
 */
function bufferToStream(binary) {

    const readableInstanceStream = new Readable({
      read() {
        this.push(binary);
        this.push(null);
      }
    });

    return readableInstanceStream;
}