Cannot find module build Release bson code MODULE NOT FOUND js-bson Failed to load c bson extension using pure JS version

Question

I am getting the below error      Error  Cannot find module     build Release bson   code   MODULE NOT FOUND       js-bson  Failed to load c   bson extension  using pure JS version   Here are my version details    OS  Windows 7 MongoDB  2 6 5 Node  0 12 0   I have tried these things before I posted the issue here    I went to  node-modules mongoose node-modules mongodb node-modules bson folder and made below change in the binding-gyp file from  include dirs       lt   node -e  require   nan         to   include dirs      lt   nodejs -p -e   require  path   dirname require resolve  nan         Ran this command npm install -g node-gyp I ve updated the mongoose version to 3 8 21 inside package json   Nothing works  Please suggest

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Deploying Keystone JS CMS I had same error and I think most elegant solution is this   Install npm-check-updates   root keystonejs    npm install -g npm-check-updates   Within your keystone site directory  where package json is placed  check dependencies   debian keystonejs   myproject manalcjim  npm-check-updates -u   Then update all packages   debian keystonejs   myproject manalcjim  npm install   And finally if you chose jade for templates  maybe you will need install jade module explicitly   debian keystonejs   myproject manalcjim  npm install jade --save

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In our case  the reason that the c   version bson was not found was because we were behind a corporate proxy and something in the BSON build process needs to reach out to fetch files   When we looked in node modules bson builderror log  we saw an error like this    gyp WARN install got an error  rolling back install gyp ERR  configure error gyp ERR  stack Error  connect ECONNREFUSED gyp ERR  stack     at errnoException  net js 904 11  gyp ERR  stack     at Object afterConnect  as oncomplete   net js 895 19    Which suggested that the proxy might be the issue   Setting the http proxy and https proxy environment variables solved it   Sorry for reawakening comments on this  but I wanted to post this for anyone else that hits this in the future since this thread was very helpful in solving our issue

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I also have this problem   But I change my mongodb version to   2 2 33  and no longer have the problem   You shoud npm rm your old mongodb package on global or local and install this version   If anyone don t want to have any side-effect on changing the direction name could try this method

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While creating setup for www spotdekho com in new windows10 machine  I was unable to run command  nodemon web js   due same error       Error  Cannot find module     build Release bson     Got it fixed by below steps          Create folder  Release  inside  node modules bson build   location   Copy bson js from  node modules bson browser build      Paste bson js inside  node modules bson build Release  folder       This will resolve the issue    PS   I am using mongoose version 4 8 8    Thanks      hope it helps someone

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Try this npm install bson and npm update

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Run this command to uninstall mongoose npm uninstall --save mongoose - thereafter reinstall it but this time npm automatically installs the latest version of mongoose run npm install --save mongoose This worked for me

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I tried this in mongo-sync version 4 1 2   but they made some changes and it is not working with the solutions provided here   the solution which worked for me   Path node modules mongo-sync node modules bson ext index js  Old Code  try          Load the precompiled win32 binary     if  process platform     win32   amp  amp  process arch     x64             bson   require    win32 x64 bson          else if  process platform     win32   amp  amp  process arch     ia32             bson   require    win32 ia32 bson          else           bson   require     build Release bson            catch  err           Attempt to load the release bson version     try           bson   require     build Release bson          catch  err            console dir err          console error  js-bson  Failed to load c   bson extension  using pure JS version            bson   require     lib bson bson              Change in the try block  copy the bson initialization from catch block   bson   require     lib bson bson      So it will look like  try          Load the precompiled win32 binary     if process platform     win32   amp  amp  process arch     x64           bson   require    win32 x64 bson            else if process platform     win32   amp  amp  process arch     ia32           bson   require    win32 ia32 bson            else         bson   require     build Release bson                 catch err           Attempt to load the release bson version     try           bson   require     lib bson bson          catch  err            console dir err          console error  js-bson  Failed to load c   bson extension  using pure JS version            bson   require     lib bson bson

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I m working with OS Windows 8 1 and I had the same problem  The source of the problem was the version of Python  I found the origin problem review the file     node modules mongodb node modules mongodb-core node modules kerberos builderror log   I installed the correct version of Python  2 7 9 for 64 bits  and it resolved my problem   Note  The installed version of python must be equal or greater than 2 7 5 and less than 3 0 0

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I solved this error by doing this and it perfectly worked for me  I have created a node App which has the folder node-android node-modules So here inside the node-modules directory I have one more directory bson ext index js open this file and you can find inside the catch block   bson   require     build Release bson        change the above line to   bson   require     browser build bson      and the error was gone for me and the app is running perfectly without any errors or warnings

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I also had the same problem with bson   trying a newer mongoose version  npm install mongoose 4 4   solved the issue   Massimo

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I realize this thread is 1 year   old  but it helped me  albeit with a different module   I installed mongoose-post-findv0 0 2 and this issue started  To fix it  I used the suggestions and navigated to  node modules mongoose-post-find node modules bson ext and opened the index js file   The file starts off with a try catch block trying to require the correct bson version  try          Load the precompiled win32 binary     if process platform     win32   amp  amp  process arch     x64           bson   require    win32 x64 bson            else if process platform     win32   amp  amp  process arch     ia32           bson   require    win32 ia32 bson            else         bson   require     build Release bson                 catch err           Attempt to load the release bson version     try           bson   require     browser build bson          catch  err            console dir err          console error  js-bson  Failed to load c   bson extension  using pure JS version            bson   require     lib bson bson              this is the corrected version  What was happening is it tried to load bson from    build Release bson  couldn t find it and fell into the catch  There is tried to load bson again from    build Release bson and of course failed  So I changes the path in the catch to look in    browser build bson  This resolved the error   I post this for completeness

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For today  year 2017  we have that awesome npm module  https   github com felixrieseberg windows-build-tools which usually solves lots of troubles with building of native things for windows   Try to fix the issue with   Remove node modules npm install --global windows-build-tools npm install

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So  i have the same problem and it happens then the specified mongoDB URL doesn t exist  So  to fix this you need to go     server config environment  folder and edit in  development js  file the link to mongoDB   Example      Development specific configuration                                       module exports          MongoDB connection options   mongo        uri   mongodb   localhost test2-dev          seedDB  true      So  change this  uri   mongodb   localhost test2-dev   to some real path to your mongoDB database   I will be glad if my post will help somebody

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In my case  the bits that come with mongoose  npm install mongoose  have a working version of the mongodb package in its node modules folder   The following steps saved me the work of troubleshooting the issue    npm install mongoose copy node modules mongoose node modules mongodb to my root node modules folder  overwriting any version that came with npm install mongodb  ignore the Failed to load c   bson extension    error  or change the code to be silent on the issue

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When I was getting errors like this  I was upgrading from node v0 10 to node v4 x x   What I had to do was install a newer version of gcc  I think I had gcc v4 4 x or something   I updated to gcc 4 7 2 and things worked after that

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This worked for me  Search in your workspace for the text       build Release bson    You will probably find it inside the mongose and monk modules   Then replace each   bson   require     build Release bson      with   bson   require  bson      that s all

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Unfortunately  All the above answers are only half right   Took a long time to figure this out    Mongoose bson install via npm throws warning and causes the error     npm install -g node-gyp  git clone https   github com mongodb js-bson git cd js-bson npm install node-gyp rebuild   This works like magic

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I ve tried bson   require     browser build bson    but end up running into another error      Cannot set property  BSON BINARY SUBTYPE DEFAULT  of undefined   Finally I fixed this issue simply by npm update  this will fix the bson module in mongoose

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Find in npm module mongodb         node modules mongodb node modules bson ext index js   Change path to js version in catch block   bson   require     build Release bson      To   bson   require     browser build bson      Or copy file in         node modules bson build Release bson   From         node modules bson browser build bson

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The only thing which helps me on Windows 7  x64   https   stackoverflow com a 29714359 2670121  Reinstall node and python with x32 versions  I spent many time with this error  Failed to load c   bson extension  and finally  when I installed module node-gyp  for build native addons  and even installed windows SDK with visual studio - nodejs didn t recognize assembled module bson node as module  After reinstall the problem is gone   Again  What means this error   Actually  it s even not error  You still can use mongoose  But in this case  instead of fast native realization of bson module  you got js-realization  which slower  I saw many tips like   edit path deep inside node modules     - which totaly useless because it s not solve the problem but just turned off the error messages

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The marked answer is completely wrong  All that does is hide the console log statement and does nothing whatsoever do address the actually issue  You can also close your eyes and it will achieve the same result   The issue is caused by node-gyp and only that  Its purpose is to compile native extensions for certain modules such as bson   If it fails to do so then the code will fallback to the JS version and kindly tell you so through the informative message   Failed to load c   bson extension  using pure JS version   I assume the question is really about how to compile the native C   extension rather that just not seeing the message so let s address that   In order for node-gyp to work your node-gyp must be up to date with your node and C   compiler  that will differ based on your OS   Just as important your module must also be up to date   First uninstall and reinstall node-gyp  npm un node-gyp -g npm i node-gyp -g   Now you will need to fully uninstall and reinstall any node module in your app  that includes modules installed by requirements as well  that have bson  That should take care of the error  You can search for  Release bson  and find the culprits   find node modules  -type  f  -exec grep -H  Release bson          And then uninstall and reinstall these modules   Easier is to just redo the entire node modules folder    rm -rf node modules  npm cache clear  npm i   If you still experience issues then either 1  your module is out of date - check issue tracker in their repo or 2  you have a potential conflict - sometimes we may have a local node-gyp for example  You can run node-gyp by itself and verify versions

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Try npm install mongoose 3 8 23 and also replace  bson   require     build Release bson    to  bson   require     browser build bson    in node modules bson ext index js

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The problem is when you install mongoose via npm it assumes you have python installed on your windows and tries to build required libraries  Since you do not have python it skips building phase with a warning  But when you start your application  required modules are not there so you get this error    In order to do things right first install python  version 2 7  on your computer from  https   www python org downloads  or if u have installed chockolatey just type choco install python2   Then make sure your python variable is set  You can set it on command prompt like   SET python D  Python27 python exe    Of course you should change the path according to your location of python  Then install node-gyp   npm install -g node-gyp   Now you can reinstall mongoose or whatever module causing the problem   npm install mongoose   You will see some yellow lines instead of red ones this time but the error will be gone

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I resolved this issue by installing mogoose version 3 8 23  npm install mongoose 3 8 23

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I had the same issue after upgrade version of ubuntu to 16 04  I solved in this way  hope it helps    rm -rf node modules  npm --save install bson  npm --save install mongoose  npm install

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This worked for me   Go to the file  in your project    node modules mongoose node modules mongodb node modules bson ext index js  and change   bson   require     build Release bson     to   bson   require  bson     Reference  https   github com mongodb js-bson issues 118

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Short answer Install the latest version of mongodb  A little longer answer Make sure your package json is using the latest version of mongodb  then remove node modules mongodb and do npm install again  If you didn t use mongodb as a direct dependency  try to find which package is using mongdb  I used  find   -type f -name package json   xargs grep mongodb       sails-mongo package json      quot mongodb quot    quot 1 4 26 quot        So I updated   sails-mongo package json to   quot mongodb quot    quot 2 1 7 quot    Then remove node modules mongodb and do npm install again  Seems fine now  Even longer answer I don t like the current suggested way of using require     browser build bson    Since looking at    browser build bson js  a 4k  lines file  which seem also a  quot non-native quot  implementation   So although it won t spit out any  complains  it is still  quot using pure JS version quot   which means slower performance  Looking at https   github com mongodb js-bson issues 145 and  https   github com mongodb js-bson issues 165  it seems like the issue was caused by   antoniofruci commented on Sep 15  2015 I just found out that c   code has been moved out 6 months ago and it is now an optional dependency  bson-ext  Indeed  if you install latest version no error occurs   So I tried to remove the whole node modules and still got the same error  And looking at package json of node modules mongodb  its version is still 1 4 26  not latest 2 1 7  Apparently my mongodb comes as a dependency of another package I installed  sails-mongo   Modifying the package json of sails-mongo and redoing npm install finally solve the issue

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Tried npm install mongoose --msvs version 2012  if you have multiple Visual installed  it worked for me

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You should never change files in NODE MODULES library folder   Those files are result of npm install command   Basicaly  I think for Windows users - right way is use VM  It s what I m doing when I work from home   All you need   for CentOS  yum install gcc gcc-c   make openssl-devel  for Debian Ubuntu  apt-get install build-essential  and then npm install or  if you have already done it - npm update

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First copy bson js code from browser build folder   second create new file bson js and paste code  third save the new file near to in index js

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The best solution for me was to upgrade from node-mongodb 1 x to 2 x

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find in npm module mongodb   node modules mongodb node modules bson ext index js  and change path to js version in catch block  bson   require     build Release bson      to    bson   require     browser build bson     try              Load the precompiled win32 binary         if process platform     win32   amp  amp  process arch     x64               bson   require    win32 x64 bson                else if process platform     win32   amp  amp  process arch     ia32               bson   require    win32 ia32 bson                else            bson   require     browser build bson                         catch err               Attempt to load the release bson version         try               bson   require     browser build bson              catch  err                console dir err              console error  js-bson  Failed to load c   bson extension  using pure JS version                bson   require     lib bson bson

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For everyone still searching for a solution  I solved it by  bson   require           browser build bson js      instead of   bson   require    browser build bson js      so look if the path is correct

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I had this issue today  Feb 19th  2016  and I solved it just by installing the latest version of Mongoose  Try putting this in your package json    mongoose     4 4    Hope that helps  Solved it for me

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If you are using windows 8 1  you might want to make sure that you are installing your npm modules with the correct visual studio compiler   I have Visual Studio 2012 installed  this command works for me   after deleting node modules dir   npm install --msvs version 2012  For some reason  node-gyp is trying to use the incorrect version of Visual Studio compiler   I also noticed that the  npm install  command was printing out a warnings about not node-gyp dependencies when installing the mongodb and mongoose modules   After using the correct msvs version  the npm install warnings went away as well as the console warning when running my nodejs app   You might also want to make sure that you have the correct Python 2 7 X version installed and not Python 3 0 X   You will also need to make sure that python is in your env path

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First I just find in npm module mongodb  the file index js   node modules mongodb node modules bson ext index js  and change path to js version in catch block  bson   require     build Release bson    to  bson   require     browser build bson     but then I just changed it like this  all the similar    previously installed the module       bson   require  bson

[javascript] Cannot find module '../build/Release/bson'] code: 'MODULE_NOT_FOUND' } js-bson: Failed to load c++ bson extension, using pure JS version

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