Convert string to buffer Node

Question

I am using a library which on call of a function returns the toString of a buffer   The exact code is   return Buffer concat stdOut  toString  utf-8      But I don t want string version of it   I just want the buffer  So how to convert string back to buffer   Something like if  var bufStr   Buffer concat stdOut  toString  utf-8      convert bufStr back to only Buffer concat stdOut     How to do this   I tried doing   var buf   Buffer from bufStr   utf-8      But it throws utf-8 is not a function  When I do   var buf   Buffer from bufStr     It throws TypeError   this is not a typed array   Thanks

User · Accepted Answer

You can do   var buf   Buffer from bufStr   utf8      But this is a bit silly  so another suggestion would be to copy the minimal amount of code out of the called function to allow yourself access to the original buffer   This might be quite easy or fairly difficult depending on the details of that library

User · Answer

You can use Buffer from   to convert a string to buffer  More information on this can be found here  var buf   Buffer from  some string    encoding      for example  var buf   Buffer from bStr   utf-8

User · Answer

This is working for me  you might change your code like this  var responseData x toString      to  var responseData x toString  binary      and finally  response write new Buffer toTransmit   binary

User · Answer

Note  Just reposting John Zwinck s comment as answer  One issue might be that you are using a older version of Node  for the moment  I cannot upgrade  codebase struck with v4 3 1   Simple solution here is  using the deprecated way  new Buffer bufferStr   Note  2  This is for people struck in older version  for whom Buffer from does not work

[node.js] Convert string to buffer Node

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