Asset precompilation failing

[christopherdbull]

Hi, I'm having a weird issue and I'm not really sure where this belongs. I've made a ticket on Webpacker, as that was my first suspect, but I wonder if it's not more appropriate over here.

rails/webpacker#611

Basically, my deploys are all crashing on assets:precompile, claiming that node isn't available. This is despite the individual tasks all completing successfully when run with heroku run.

This is the output:

remote: -----> Detecting rake tasks
remote: -----> Preparing app for Rails asset pipeline
remote:        Running: rake assets:precompile
remote:        /usr/bin/env: ‘node’: No such file or directory
remote:        I, [2017-08-03T09:02:56.853456 #386]  INFO -- : Writing /tmp/build_8c9433d70588461997fe92fb589ad63b/public/assets/application-4686b818638f6733ef663ff96aa2bb9a7c1ee1fa04ffcb01931142cc7bce910a.js
remote:        I, [2017-08-03T09:02:56.853976 #386]  INFO -- : Writing /tmp/build_8c9433d70588461997fe92fb589ad63b/public/assets/application-4686b818638f6733ef663ff96aa2bb9a7c1ee1fa04ffcb01931142cc7bce910a.js.gz
remote:        I, [2017-08-03T09:02:56.859639 #386]  INFO -- : Writing /tmp/build_8c9433d70588461997fe92fb589ad63b/public/assets/application-f0d704deea029cf000697e2c0181ec173a1b474645466ed843eb5ee7bb215794.css
remote:        I, [2017-08-03T09:02:56.859867 #386]  INFO -- : Writing /tmp/build_8c9433d70588461997fe92fb589ad63b/public/assets/application-f0d704deea029cf000697e2c0181ec173a1b474645466ed843eb5ee7bb215794.css.gz
remote:        vendor/bundle/bin/rake: No such file or directory - node
remote:  !
remote:  !     Precompiling assets failed.
remote:  !
remote:  !     Push rejected, failed to compile Ruby app.
remote: 
remote:  !     Push failed

Happy to provide any other details.

[schneems]

For now add execjs to your Gemfile and re-deploy, that should fix the issue. Alternatively you can use master of the buildpack.

[christopherdbull]

Thanks @schneems , this let it go through.