Run setup.js to create the file the other two use

protobuf.js

var probuf = require("leveljs-coding/protobuf")
var fs = require("fs")
var concat = require("concat-stream")

var input = fs.createReadStream("buffs")

input.pipe(concat(function (buffer) {
  var offset = 0
  var blen = buffer.length
  while (offset < blen) {
    var result = probuf.readVarInt64(buffer, offset)
    offset += result[1]
  }
}))

setup.js

var encode = require("varint/encode")
var buffs = []
for (var i = 0; i < 3000000; i++) {
  buffs.push(Buffer(encode(i)));
}

module.exports = buffs
var fs = require("fs")

var ws = fs.createWriteStream("buffs")
ws.write(Buffer.concat(buffs))

varint.js

var Decoder = require("varint/decode")
var fs = require("fs")
var concat = require("concat-stream")

var input = fs.createReadStream("buffs")

input.pipe(concat(function (buffer) {
  var d = new Decoder()
  var inLength = true
  var length = false
  d.ondata = function (num) {
    length = num
    inLength = false
  }
  var offset = 0
  var blen = buffer.length
  while (offset < blen) {
    if (inLength) {
      var bit = buffer.readUInt8(offset)
      d.write(bit)
      offset++
    }
    else {
      inLength = true
    }
  }
}))