How to append to Buffer in Node.js

Question

Say I have a Buffer:

let b = Buffer.from('');

how can I append to b? Is the only way to create a new Buffer?

b = Buffer.concat([b, z]);

on the same subject, is there a way to create a dynamic sized buffer, or should I use Array instead?

Get Off My Lawn · Accepted Answer · 2019-07-15 18:50:54Z

14

To create a dynamic buffer use an array then concat the array similar to this:

let chunks = []

stream
  .on('data', chunk => chunks.push(chunk))
  .on('close', () => console.log(Buffer.concat(chunks)))

answered Jul 15, 2019 at 18:50

Get Off My Lawn

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2 Comments

I would think Buffer.from(chunks) makes more sense? idk

It might work, but all the examples that I have seen use concat: stackoverflow.com/a/10356183/1778465