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var bufferFill = require('buffer-fill')

var allocUnsafe = require('buffer-alloc-unsafe')

module.exports = function alloc (size, fill, encoding) {

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

throw new TypeError('"size" argument must be a number')

}

if (size < 0) {

throw new RangeError('"size" argument must not be negative')

}

if (Buffer.alloc) {

return Buffer.alloc(size, fill, encoding)

}

var buffer = allocUnsafe(size)

if (size === 0) {

return buffer

}

if (fill === undefined) {

return bufferFill(buffer, 0)

}

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

encoding = undefined

}

return bufferFill(buffer, fill, encoding)

}