所以我遇到了一个奇怪的问题。我无法在Rails 5上预编译资产以防止生产。无论是在服务器本身还是在我的本地环境中进行预编译，我都会收到相同的错误消息。
georg$ RAILS_ENV=production bundle exec rake assets:precompile
rake aborted!
ExecJS::RuntimeError: SyntaxError: Unexpected token: name ($)
get@(execjs):3538:630
(execjs):4058:47
(execjs):1:46
global code@(execjs):1:58
/Users/georg/.rvm/gems/ruby-2.2.4/gems/execjs-2.7.0/lib/execjs/external_runtime.rb:39:in `exec'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/execjs-2.7.0/lib/execjs/external_runtime.rb:21:in `eval'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/execjs-2.7.0/lib/execjs/external_runtime.rb:46:in `call'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/uglifier-3.2.0/lib/uglifier.rb:195:in `run_uglifyjs'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/uglifier-3.2.0/lib/uglifier.rb:157:in `compile'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/uglifier_compressor.rb:53:in `call'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/uglifier_compressor.rb:28:in `call'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:75:in `call_processor'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/processor_utils.rb:56:in `call_processors'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/loader.rb:134:in `load_from_unloaded'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/loader.rb:60:in `block in load'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/loader.rb:317:in `fetch_asset_from_dependency_cache'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/loader.rb:44:in `load'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:47:in `yield'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/cached_environment.rb:47:in `load'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/base.rb:66:in `find_asset'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:142:in `block in find'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:228:in `block in stat_tree'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:212:in `block in stat_directory'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `each'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `stat_directory'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:227:in `stat_tree'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:231:in `block in stat_tree'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:212:in `block in stat_directory'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `each'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `stat_directory'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:227:in `stat_tree'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:231:in `block in stat_tree'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:212:in `block in stat_directory'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `each'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `stat_directory'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:227:in `stat_tree'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:231:in `block in stat_tree'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:212:in `block in stat_directory'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `each'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:209:in `stat_directory'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/path_utils.rb:227:in `stat_tree'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `each'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:105:in `block in logical_paths'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `each'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/legacy.rb:104:in `logical_paths'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:140:in `find'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/sprockets/manifest.rb:185:in `compile'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:68:in `block (3 levels) in define'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-3.7.1/lib/rake/sprocketstask.rb:147:in `with_logger'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/sprockets-rails-3.2.0/lib/sprockets/rails/task.rb:67:in `block (2 levels) in define'
/Users/georg/.rvm/gems/ruby-2.2.4/gems/rake-12.0.0/exe/rake:27:in `<top (required)>'
/Users/georg/.rvm/gems/ruby-2.2.4/bin/ruby_executable_hooks:15:in `eval'
/Users/georg/.rvm/gems/ruby-2.2.4/bin/ruby_executable_hooks:15:in `<main>'
Tasks: TOP => assets:precompile
(See full trace by running task with --trace)
为了解决这个问题，我做了以下几点：
1。）我有一个子资源文件结构，我指的是资产/ javascript，所以我把它添加到资产路径，我认为这可能是问题 - 但显然它不是。我像这样阅读路径：
Dir.glob("#{Rails.root}/app/assets/javascripts/**/").each do |path|
config.assets.paths << path
end
2.）我删除了application.js中的所有引用 - 它是空的，我仍然得到错误。
3.）我删除/添加了therubyracer
# gem 'therubyracer', platforms: :ruby
4.。）我独立安装并更新了execjs gem
5。）最后，我的想法已经不多了。鉴于在没有任何编译的情况下我得到了错误。
我的环境：
georg$ rails -v
Rails 5.0.5
georg$ ruby -v
ruby 2.2.4p230 (2015-12-16 revision 53155) [x86_64-darwin16]
编译是在OSx和Debian上完成的。
任何提示都非常感谢!!
答案 0 :(得分：0)
问题在于树中的自定义js文件。鉴于applciation.js中包含大量js文件，鉴于我从跟踪中获得的信息有限，显然是一种痛苦的尝试和错误的方法来解决问题的根源。 知道是否有办法获取更多信息以避免冗长的低效调试会话将会很有趣。
目前，我删除了所有js，逐个添加它们并运行预编译，直到我点击违规代码。