datamosh/lib/modes/schifty.js

Edit images via buffers.

"use strict";

module.exports = function (data) {
  let size = Math.random() * 1024 * 4;
  let total = size;
  let temp = [];
  const storage = [];

  for (let i = 0; i < data.length; i++) {
    if (i < total) temp.push(data[i]);
    else {
      storage.push(Buffer.from(temp));
      size = Math.random() * 1024 * 2;
      total += size;
      temp = [];
    }
  }

  data = Buffer.concat(storage);
  return data;
};