RoR Precompiling Assets fail while rake assets:precompile - on basically empty application.js
-
11-02-2021 - |
Question
Running:
bundle exec rake assets:precompile RAILS_ENV=production --trace
** Execute assets:precompile:primary
rake aborted!
TypeError: Object doesn't support this property or method
(in C:/Sites/MyApp/app/assets/javascripts/application.js)
Here is the entire content of application.js
:
//= require jquery
//= require jquery_ujs
//= require_tree .
nothing else there.
I tried to remove the three //= require
lines from application.js
, the precompilation then runs with no problems.
Solution
Looks like it might be a problem with uglifier and Windows Script Host:
https://github.com/rails/rails/issues/2847
Make sure you're using the last version of uglifier (1.0.4). If you're still having problems, I'd suggest trying a different compiler (e.g. Closure compiler)
In Gemfile
:
gem 'closure-compiler'
In config/environments/production.rb
config.assets.js_compressor = :closure
alternatively disable JS compression altogether:
config.assets.compress = false
OTHER TIPS
I got same sort of error
...>rake assets:precompile
C:/Ruby192/bin/ruby.exe C:/Ruby192/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets
...
rake aborted!
TypeError: Object doesn't support this property or method
(in C:/Users/straffordw/railsApps/chorus-spp/app/assets/javascripts/application.js)
C:/Ruby192/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:68:in `extract_result'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:28:in `block in exec'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:41:in `compile_to_tempfile'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/external_runtime.rb:27:in `exec'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/uglifier-2.0.1/lib/uglifier.rb:167:in `really_compile'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/uglifier-2.0.1/lib/uglifier.rb:95:in `compile'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/actionpack-3.2.11/lib/sprockets/compressors.rb:74:in `compress'
C:/Ruby192/lib/ruby/gems/1.9.1/gems/sprockets-2.2.2/lib/sprockets/processing.rb:265:in `block in js_compressor='
...
and did
bundle update
which brought in
uglifier (2.1.1)
(amongst other things), then:
rake assets:precompile
and that resolved my problem. Windows, Rails 3.2.11.
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