opusdev/vector-similarity-api

1/*! safe-buffer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */2/* eslint-disable node/no-deprecated-api */3var buffer = require('buffer')4var Buffer = buffer.Buffer5 6// alternative to using Object.keys for old browsers7function copyProps (src, dst) {8  for (var key in src) {9    dst[key] = src[key]10  }11}12if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {13  module.exports = buffer14} else {15  // Copy properties from require('buffer')16  copyProps(buffer, exports)17  exports.Buffer = SafeBuffer18}19 20function SafeBuffer (arg, encodingOrOffset, length) {21  return Buffer(arg, encodingOrOffset, length)22}23 24SafeBuffer.prototype = Object.create(Buffer.prototype)25 26// Copy static methods from Buffer27copyProps(Buffer, SafeBuffer)28 29SafeBuffer.from = function (arg, encodingOrOffset, length) {30  if (typeof arg === 'number') {31    throw new TypeError('Argument must not be a number')32  }33  return Buffer(arg, encodingOrOffset, length)34}35 36SafeBuffer.alloc = function (size, fill, encoding) {37  if (typeof size !== 'number') {38    throw new TypeError('Argument must be a number')39  }40  var buf = Buffer(size)41  if (fill !== undefined) {42    if (typeof encoding === 'string') {43      buf.fill(fill, encoding)44    } else {45      buf.fill(fill)46    }47  } else {48    buf.fill(0)49  }50  return buf51}52 53SafeBuffer.allocUnsafe = function (size) {54  if (typeof size !== 'number') {55    throw new TypeError('Argument must be a number')56  }57  return Buffer(size)58}59 60SafeBuffer.allocUnsafeSlow = function (size) {61  if (typeof size !== 'number') {62    throw new TypeError('Argument must be a number')63  }64  return buffer.SlowBuffer(size)65}66