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

'use strict'

var buffer = require('buffer') var Buffer = buffer.Buffer

var safer = {}

var key

for (key in buffer) {

if (!buffer.hasOwnProperty(key)) continue
if (key === 'SlowBuffer' || key === 'Buffer') continue
safer[key] = buffer[key]

}

var Safer = safer.Buffer = {} for (key in Buffer) {

if (!Buffer.hasOwnProperty(key)) continue
if (key === 'allocUnsafe' || key === 'allocUnsafeSlow') continue
Safer[key] = Buffer[key]

}

safer.Buffer.prototype = Buffer.prototype

if (!Safer.from || Safer.from === Uint8Array.from) {

Safer.from = function (value, encodingOrOffset, length) {
  if (typeof value === 'number') {
    throw new TypeError('The "value" argument must not be of type number. Received type ' + typeof value)
  }
  if (value && typeof value.length === 'undefined') {
    throw new TypeError('The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type ' + typeof value)
  }
  return Buffer(value, encodingOrOffset, length)
}

}

if (!Safer.alloc) {

Safer.alloc = function (size, fill, encoding) {
  if (typeof size !== 'number') {
    throw new TypeError('The "size" argument must be of type number. Received type ' + typeof size)
  }
  if (size < 0 || size >= 2 * (1 << 30)) {
    throw new RangeError('The value "' + size + '" is invalid for option "size"')
  }
  var buf = Buffer(size)
  if (!fill || fill.length === 0) {
    buf.fill(0)
  } else if (typeof encoding === 'string') {
    buf.fill(fill, encoding)
  } else {
    buf.fill(fill)
  }
  return buf
}

}

if (!safer.kStringMaxLength) {

try {
  safer.kStringMaxLength = process.binding('buffer').kStringMaxLength
} catch (e) {
  // we can't determine kStringMaxLength in environments where process.binding
  // is unsupported, so let's not set it
}

}

if (!safer.constants) {

safer.constants = {
  MAX_LENGTH: safer.kMaxLength
}
if (safer.kStringMaxLength) {
  safer.constants.MAX_STRING_LENGTH = safer.kStringMaxLength
}

}

module.exports = safer