opusdev/vector-similarity-api

1/* eslint-disable node/no-deprecated-api */2 3'use strict'4 5var buffer = require('buffer')6var Buffer = buffer.Buffer7 8var safer = {}9 10var key11 12for (key in buffer) {13  if (!buffer.hasOwnProperty(key)) continue14  if (key === 'SlowBuffer' || key === 'Buffer') continue15  safer[key] = buffer[key]16}17 18var Safer = safer.Buffer = {}19for (key in Buffer) {20  if (!Buffer.hasOwnProperty(key)) continue21  if (key === 'allocUnsafe' || key === 'allocUnsafeSlow') continue22  Safer[key] = Buffer[key]23}24 25safer.Buffer.prototype = Buffer.prototype26 27if (!Safer.from || Safer.from === Uint8Array.from) {28  Safer.from = function (value, encodingOrOffset, length) {29    if (typeof value === 'number') {30      throw new TypeError('The "value" argument must not be of type number. Received type ' + typeof value)31    }32    if (value && typeof value.length === 'undefined') {33      throw new TypeError('The first argument must be one of type string, Buffer, ArrayBuffer, Array, or Array-like Object. Received type ' + typeof value)34    }35    return Buffer(value, encodingOrOffset, length)36  }37}38 39if (!Safer.alloc) {40  Safer.alloc = function (size, fill, encoding) {41    if (typeof size !== 'number') {42      throw new TypeError('The "size" argument must be of type number. Received type ' + typeof size)43    }44    if (size < 0 || size >= 2 * (1 << 30)) {45      throw new RangeError('The value "' + size + '" is invalid for option "size"')46    }47    var buf = Buffer(size)48    if (!fill || fill.length === 0) {49      buf.fill(0)50    } else if (typeof encoding === 'string') {51      buf.fill(fill, encoding)52    } else {53      buf.fill(fill)54    }55    return buf56  }57}58 59if (!safer.kStringMaxLength) {60  try {61    safer.kStringMaxLength = process.binding('buffer').kStringMaxLength62  } catch (e) {63    // we can't determine kStringMaxLength in environments where process.binding64    // is unsupported, so let's not set it65  }66}67 68if (!safer.constants) {69  safer.constants = {70    MAX_LENGTH: safer.kMaxLength71  }72  if (safer.kStringMaxLength) {73    safer.constants.MAX_STRING_LENGTH = safer.kStringMaxLength74  }75}76 77module.exports = safer78