npm ERR cb() never called

Question

I have a Node.js app hosted on Heroku. Every time I do a git push heroku I get the following error:

Counting objects: 14, done. Delta compression using up to 6 threads. Compressing objects: 100% (12/12), done. Writing objects: 100% (12/12), 1.20 KiB, done. Total 12 (delta 8), reused 0 (delta 0)  -----> Node.js app detected -----> Resolving engine versions        Using Node.js version: 0.6.20        Using npm version: 1.2.12 -----> Fetching Node.js binaries -----> Vendoring node into slug -----> Installing dependencies with npm        npm http GET https://registry.npmjs.org/pg/0.6.15        npm http GET https://registry.npmjs.org/socket.io        npm http 200 https://registry.npmjs.org/pg/0.6.15        npm http GET https://registry.npmjs.org/pg/-/pg-0.6.15.tgz        npm http 200 https://registry.npmjs.org/socket.io        npm http GET https://registry.npmjs.org/socket.io/-/socket.io-0.9.13.tgz        npm http 200 https://registry.npmjs.org/pg/-/pg-0.6.15.tgz        npm http 200 https://registry.npmjs.org/socket.io/-/socket.io-0.9.13.tgz        npm http GET https://registry.npmjs.org/socket.io-client/0.9.11        npm http GET https://registry.npmjs.org/policyfile/0.0.4        npm http GET https://registry.npmjs.org/base64id/0.1.0        npm http GET https://registry.npmjs.org/redis/0.7.3        npm http GET https://registry.npmjs.org/generic-pool/1.0.9        npm http 200 https://registry.npmjs.org/policyfile/0.0.4        npm http GET https://registry.npmjs.org/policyfile/-/policyfile-0.0.4.tgz         npm http 200 https://registry.npmjs.org/base64id/0.1.0        npm http GET https://registry.npmjs.org/base64id/-/base64id-0.1.0.tgz        npm http 200 https://registry.npmjs.org/generic-pool/1.0.9        npm http GET https://registry.npmjs.org/generic-pool/-/generic-pool-1.0.9 .tgz        npm http 200 https://registry.npmjs.org/socket.io-client/0.9.11        npm http GET https://registry.npmjs.org/socket.io-client/-/socket.io-clie nt-0.9.11.tgz        npm http 200 https://registry.npmjs.org/redis/0.7.3        npm http GET https://registry.npmjs.org/redis/-/redis-0.7.3.tgz        npm http 200 https://registry.npmjs.org/policyfile/-/policyfile-0.0.4.tgz         npm http 200 https://registry.npmjs.org/base64id/-/base64id-0.1.0.tgz        npm http 200 https://registry.npmjs.org/generic-pool/-/generic-pool-1.0.9 .tgz        npm http 200 https://registry.npmjs.org/socket.io-client/-/socket.io-clie nt-0.9.11.tgz        npm http 200 https://registry.npmjs.org/redis/-/redis-0.7.3.tgz         > [email protected] install /tmp/build_36us8733h7kkr/node_modules/pg        > node-waf configure build || (exit 0)         Checking for program g++ or c++          : /usr/bin/g++        Checking for program cpp                 : /usr/bin/cpp        Checking for program ar                  : /usr/bin/ar        Checking for program ranlib              : /usr/bin/ranlib        Checking for g++                         : ok        Checking for node path                   : not found        Checking for node prefix                 : ok /tmp/node-node-nNUw        Checking for program pg_config           : /usr/bin/pg_config        'configure' finished successfully (0.058s)        Waf: Entering directory `/tmp/build_36us8733h7kkr/node_modules/pg/build'        [1/2] cxx: src/binding.cc -> build/Release/src/binding_1.o        [2/2] cxx_link: build/Release/src/binding_1.o -> build/Release/binding.no de        Waf: Leaving directory `/tmp/build_36us8733h7kkr/node_modules/pg/build'        'build' finished successfully (0.492s)        npm http GET https://registry.npmjs.org/uglify-js/1.2.5        npm http GET https://registry.npmjs.org/ws        npm http GET https://registry.npmjs.org/xmlhttprequest/1.4.2        npm http GET https://registry.npmjs.org/active-x-obfuscator/0.0.1        npm http 200 https://registry.npmjs.org/active-x-obfuscator/0.0.1        npm http GET https://registry.npmjs.org/active-x-obfuscator/-/active-x-ob fuscator-0.0.1.tgz        npm http 200 https://registry.npmjs.org/uglify-js/1.2.5        npm http GET https://registry.npmjs.org/uglify-js/-/uglify-js-1.2.5.tgz        npm http 200 https://registry.npmjs.org/xmlhttprequest/1.4.2        npm http GET https://registry.npmjs.org/xmlhttprequest/-/xmlhttprequest-1 .4.2.tgz        npm http 200 https://registry.npmjs.org/ws        npm http GET https://registry.npmjs.org/ws/-/ws-0.4.25.tgz        npm http 200 https://registry.npmjs.org/active-x-obfuscator/-/active-x-ob fuscator-0.0.1.tgz        npm http 200 https://registry.npmjs.org/uglify-js/-/uglify-js-1.2.5.tgz        npm http 200 https://registry.npmjs.org/xmlhttprequest/-/xmlhttprequest-1 .4.2.tgz        npm http 200 https://registry.npmjs.org/ws/-/ws-0.4.25.tgz        npm http GET https://registry.npmjs.org/zeparser/0.0.5        npm http GET https://registry.npmjs.org/commander        npm http GET https://registry.npmjs.org/tinycolor        npm http GET https://registry.npmjs.org/options        npm http 200 https://registry.npmjs.org/zeparser/0.0.5        npm http GET https://registry.npmjs.org/zeparser/-/zeparser-0.0.5.tgz        npm http 200 https://registry.npmjs.org/options        npm http GET https://registry.npmjs.org/options/-/options-0.0.3.tgz        npm http 200 https://registry.npmjs.org/tinycolor        npm http GET https://registry.npmjs.org/tinycolor/-/tinycolor-0.0.1.tgz        npm http 200 https://registry.npmjs.org/commander        npm http GET https://registry.npmjs.org/commander/-/commander-0.6.1.tgz        npm http 200 https://registry.npmjs.org/zeparser/-/zeparser-0.0.5.tgz        npm http 200 https://registry.npmjs.org/options/-/options-0.0.3.tgz        npm http 200 https://registry.npmjs.org/tinycolor/-/tinycolor-0.0.1.tgz        npm http 200 https://registry.npmjs.org/commander/-/commander-0.6.1.tgz         > [email protected] install /tmp/build_36us8733h7kkr/node_modules/socket.io/node_ modules/socket.io-client/node_modules/ws        > (node-gyp rebuild 2> builderror.log) || (exit 0)         make: Entering directory `/tmp/build_36us8733h7kkr/node_modules/socket.io /node_modules/socket.io-client/node_modules/ws/build'          CXX(target) Release/obj.target/bufferutil/src/bufferutil.o          SOLINK_MODULE(target) Release/obj.target/bufferutil.node          SOLINK_MODULE(target) Release/obj.target/bufferutil.node: Finished          COPY Release/bufferutil.node          CXX(target) Release/obj.target/validation/src/validation.o          SOLINK_MODULE(target) Release/obj.target/validation.node          SOLINK_MODULE(target) Release/obj.target/validation.node: Finished          COPY Release/validation.node        make: Leaving directory `/tmp/build_36us8733h7kkr/node_modules/socket.io/ node_modules/socket.io-client/node_modules/ws/build'        npm ERR! cb() never called!        npm ERR! not ok code undefined        npm ERR! cb() never called!        npm ERR! not ok code 1  !     Failed to install --production dependencies with npm  !     Heroku push rejected, failed to compile Node.js app  To [email protected]:still-chamber-1286.git  ! [remote rejected] master -> master (pre-receive hook declined) error: failed to push some refs to '[email protected]:still-chamber-1286.git' 

The error is in the last few lines:

npm ERR! cb() never called!            npm ERR! not ok code undefined            npm ERR! cb() never called!            npm ERR! not ok code 1      !     Failed to install --production dependencies with npm      !     Heroku push rejected, failed to compile Node.js app      To [email protected]:still-chamber-1286.git      ! [remote rejected] master -> master (pre-receive hook declined)     error: failed to push some refs to '[email protected]:still-chamber-1286.git' 

I have had no problems with pushing my code to Heroku before; only since Monday have I had this error.

I have seen similar posts on the web referring to slightly different errors, but haven't seen one with ! [remote rejected] master -> master (pre-receive hook declined) before.

Answer 1

If you have npm version 5 or above, try this first:

$ sudo npm cache verify 

Otherwise:

$ sudo npm cache clean 

My node and npm versions are:

$ node -v v0.10.0  $ npm -v 1.2.14 

https://docs.npmjs.com/cli/cache