DeprecationWarning Buffer is deprecated due to security and usability issues when I move my script to another server

Question

Getting error when script move to other server        node 15707   DEP0005  DeprecationWarning  Buffer   is deprecated due to security and usability issues  Please use the Buffer alloc    Buffer allocUnsafe    or Buffer from   methods instead      Current Versions     Ubuntu 16 04 4 LTS   Node - v10 9 0   NPM - 6 2 0     Previous Version   Ubuntu 14 04 3 LTS NPM - 3 10 10 Node - v6 10 3     exports basicAuthentication   function  req  res  next        console log  basicAuthentication        if   req headers authorization            return res status 401  send               message   Unauthorised access                        var auth   req headers authorization      var baseAuth   auth replace  Basic            baseAuth   baseAuth trim        var userPasswordString   new Buffer baseAuth   base64   toString  ascii        var credentials   userPasswordString split            var username   credentials 0      undefined   credentials 0            var password   credentials 1      undefined   credentials 1            var userQuery    mobilenumber  username  otp  password       console log userQuery       User findOne userQuery  exec function  err  userinfo            if  err     userinfo                 return res status 401  send                   message   Unauthorised access                             else               req user   userinfo              next

User · Answer

var userPasswordString   new Buffer baseAuth   base64   toString  ascii     Change this line from your code to this - var userPasswordString   Buffer from baseAuth   base64   toString  ascii     or in my case  I gave the encoding in reverse order var userPasswordString   Buffer from baseAuth   utf-8   toString  base64

User · Answer

The use of the deprecated new Buffer   constructor  i E  as used by Yarn  can cause deprecation warnings  Therefore one should NOT use the deprecated unsafe Buffer constructor    According to the deprecation warning new Buffer   should be replaced with one of    Buffer alloc    Buffer allocUnsafe   or  Buffer from     Another option in order to avoid this issue would be using the safe-buffer package instead   You can also try  when using yarn      yarn global add yarn   as mentioned here  Link  Another suggestion from the comments  thx to gkiely   self-update      Note  self-update is not available  See policies for enforcing versions within a project   In order to update your version of Yarn  run   curl --compressed -o- -L https   yarnpkg com install sh   bash

User · Answer

new Buffer number                Old Buffer alloc number              New     new Buffer string                Old Buffer from string               New     new Buffer string  encoding      Old Buffer from string  encoding     New     new Buffer    arguments          Old Buffer from    arguments         New     Note that Buffer alloc   is also faster on the current Node js versions than new Buffer size  fill 0   which is what you would otherwise need to ensure zero-filling

[node.js] DeprecationWarning: Buffer() is deprecated due to security and usability issues when I move my script to another server

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