var res = ''
    var tmp = ''
   var end = arr.length

    for (var i = 0; i < end; i++) {
        if (arr[i] <= 0x7F) {
            res += decodeUtf8Char(tmp) + String.fromCharCode(arr[i])
            tmp = ''
        } else {
            tmp += '%' + arr[i].toString(16)
        }
    }

    var str = res + decodeUtf8Char(tmp)

    function decodeUtf8Char(str) {
        try {
            return decodeURIComponent(str)
        } catch (err) {
            return String.fromCharCode(0xFFFD) // UTF 8 invalid char
        }
    }

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20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 1, 69, 20, 80, 7, 255, 217]

buf.slice([start], [end])#
start Number, Optional, Default: 0
end Number, Optional, Default: buffer.length
Returns a new buffer which references the same memory as the old, but offset and cropped by the start (defaults to 0) and end (defaults to buffer.length) indexes. Negative indexes start from the end of the buffer.

Modifying the new buffer slice will modify memory in the original buffer!

On the bracket-notation perf test:
Proxy and typedarray implementations get "56,784 ops/sec ±1.68% (65 runs sampled)"
OldBuffer gets "11,787,803 ops/sec ±0.95% (66 runs sampled)"

$ browserify -r native-buffer-browserify | wc -c
   57387
$ browserify -r buffer-browserify | wc -c       
   64427

Uncaught TypeError: Cannot set property length of [object Object] which has only a getter

b = new Buffer(1)
b.get(0)  // Node v0.10.21 returns 0, browserify throws: TypeError: Object [object Uint8Array] has no method 'get'

var a = new Uint8Array(128)
crypto.getRandomValues(a)

var b = Buffer(128)
crypto.getRandomValues(b)

var buf = new Buffer(100);
var arr = new Uint8Array(100);
buf instanceof Uint8Array; // true
Uint8Array.prototype.subarray.call(arr, 0, 0).length; // 0
Uint8Array.prototype.subarray.call(buf, 0, 0).length; // 100 ! 

  var fs = require('fs');
  var B = require('buffer/').Buffer;

  var buffin = fs.readFileSync('excel.xls');

  var b64 = buffin.toString('base64');

  var bf = new B(b64,'base64');

  fs.writeFile('excelo.xls', bf, function (err) {
           if (err) throw err;
               console.log('It\'s saved!');
  });

if (list.length === 1) {
  return list[0];
}

var number = "1003";

var nodeBuf = new Buffer(64);

// Succeeds
nodeBuf.writeUInt16LE(number, 0);
console.log("Written to buffer: " + nodeBuf.readUInt16LE(0));

var NEWBuffer = require('buffer/').Buffer;

var newBuffer = new NEWBuffer(64);

// Fails
newBuffer.writeUInt16LE(number, 0);

$ node bufferDebug.js

d:\********\node_modules\buffer\index.js:1168
  if (!test) throw new Error(message || 'Failed assertion')
                   ^
Error: cannot write a non-number as a number
    at assert (d:\********\node_modules\buffer\index.js:1168:20)
    at verifuint (d:\********\node_modules\buffer\index.js:1148:3)
    at writeUInt16 (d:\********\node_modules\buffer\index.js:744:5)
    at Uint8Array.Buffer.writeUInt16LE (d:\********\node_modules\buffer\index.js:760:10)
    at Object.<anonymous> (d:\********\server\utilities\bufferDebug.js:19:11
)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)

$ browserify -r native-buffer-browserify | wc -c
66737

$ browserify -r native-buffer-browserify | wc -c
35575

var Buffer = require('./node_modules/buffer').Buffer;

var data = [ 
  "LS0tCnRpdGxlOiBUaHJlZSBkYXNoZXMgbWFya3MgdGhlIHNwb3QKdGFnczoK",
  "LS0tCnRpdGxlOiBUaHJlZSBkYXNoZXMgbWFya3MgdGhlIHNwb3QKdGFnczoK\nICAtIHlhbWwKICAtIGZyb250LW1hdHRlcgogIC0gZGFzaGVzCmV4cGFuZWQt",
  "LS0tCnRpdGxlOiBUaHJlZSBkYXNoZXMgbWFya3MgdGhlIHNwb3QKdGFnczoKICAtIHlhbWwKICAtIGZyb250LW1hdHRlcgogIC0gZGFzaGVzCmV4cGFuZWQt"
];

data.forEach(function(dat) {
  var d = new Buffer(dat, 'base64');
  console.log(d.toString('utf8'));
});

---
title: Three dashes marks the spot
tags:

---
title: Three dashes marks the spot
tags:
�(�(�)�

---
title: Three dashes marks the spot
tags:
  - yaml
  - front-matter
  - dashes
expaned-

function utf8ToBinaryString() {
  var escstr = encodeURIComponent(str);
  // replaces any uri escape sequence, such as %0A, with binary escape, such as 0x0A
  var binstr = escstr.replace(/%([0-9A-F]{2})/g, function(match, p1) {
    return String.fromCharCode('0x' + p1);
  });

  return binstr;
}

function utf8ToBuffer(str) {
  var binstr = utf8ToBinaryString(str);
  var buf = new Uint8Array(binstr.length);
  Array.prototype.forEach.call(binstr, function (ch, i) {
    buf[i] = ch.charCodeAt(0);
  });
  return buf;
}

function utf8ToBase64(str) {
  var binstr = utf8ToBinaryString(str);
  return btoa(binstr);
}

buf = new Buffer(1)
buf.toArrayBuffer  // undefined on Firefox, new Buffer(this).buffer on Chrome

arr.toArrayBuffer = BufferToArrayBuffer

arrayBuffer = new Uint8Array(buf.length);
for (var i = 0; i < buf.length; i += 1) arrayBuffer[i] = buf[i]