HORIZON PROJECT

/* eslint-disable node/no-deprecated-api */

var buffer = require('buffer')

var Buffer = buffer.Buffer

// alternative to using Object.keys for old browsers

function copyProps (src, dst) {

  for (var key in src) {

    dst[key] = src[key]

  }

}

if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {

  module.exports = buffer

} else {

  // Copy properties from require('buffer')

  copyProps(buffer, exports)

  exports.Buffer = SafeBuffer

}

function SafeBuffer (arg, encodingOrOffset, length) {

  return Buffer(arg, encodingOrOffset, length)

}

// Copy static methods from Buffer

copyProps(Buffer, SafeBuffer)

SafeBuffer.from = function (arg, encodingOrOffset, length) {

  if (typeof arg === 'number') {

    throw new TypeError('Argument must not be a number')

  }

  return Buffer(arg, encodingOrOffset, length)

}

SafeBuffer.alloc = function (size, fill, encoding) {

  if (typeof size !== 'number') {

    throw new TypeError('Argument must be a number')

  }

  var buf = Buffer(size)

  if (fill !== undefined) {

    if (typeof encoding === 'string') {

      buf.fill(fill, encoding)

    } else {

      buf.fill(fill)

    }

  } else {

    buf.fill(0)

  }

  return buf

}

SafeBuffer.allocUnsafe = function (size) {

  if (typeof size !== 'number') {

    throw new TypeError('Argument must be a number')

  }

  return Buffer(size)

}

SafeBuffer.allocUnsafeSlow = function (size) {

  if (typeof size !== 'number') {

    throw new TypeError('Argument must be a number')

  }

  return buffer.SlowBuffer(size)

}