“rake assets:precompile”出现标点符号错误。

Question

我正在尝试为生产环境预编译资产，但Rails似乎不合作。

$ bundle exec rake assets:precompile
/home/drderp/.rvm/rubies/ruby-1.9.3-p194/bin/ruby /home/drderp/.rvm/gems/ruby-1.9.3-p194@global/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets
rake aborted!
Unexpected token punc, expected punc (line: 213, col: 13, pos: 5986)

Error
    at new JS_Parse_Error (<eval>:1720:22)
    at js_error (<eval>:1728:15)
    at croak (<eval>:2189:17)
    at token_error (<eval>:2196:17)
    at expect_token (<eval>:2209:17)
    at Object.expect (<eval>:2212:40)
    at Object.1 (<eval>:2763:38)
    at prog1 (<eval>:2770:28)
    at <eval>:2560:51
    at maybe_unary (<eval>:2665:27)
  (in /home/drderp/projects/p/app/assets/javascripts/application.js)

Tasks: TOP => assets:precompile:primary
(See full trace by running task with --trace)
rake aborted!
Command failed with status (1): [/home/drderp/.rvm/rubies/ruby-1.9.3-p194/b...]

Tasks: TOP => assets:precompile
(See full trace by running task with --trace)

这是application.js文件的完整内容:

// This is a manifest file that'll be compiled into application.js, which will include all the files
// listed below.
//
// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
// or vendor/assets/javascripts of plugins, if any, can be referenced here using a relative path.
//
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// the compiled file.
//
// Since javascript, no matter what order you load it in, executes in different order, it doesn't
// matter
//
// WARNING: THE FIRST BLANK LINE MARKS THE END OF WHAT'S TO BE PROCESSED, ANY BLANK LINE SHOULD
// GO AFTER THE REQUIRES BELOW.
//
//= require jquery

运行在Ruby 1.9.3上的Rails版本为3.2.8。

编辑:

以下是请求的bundle exec rake assets:precompile --trace：

$ bundle exec rake assets:precompile --trace
** Invoke assets:precompile (first_time)
** Execute assets:precompile
/home/drderp/.rvm/rubies/ruby-1.9.3-p194/bin/ruby /home/drderp/.rvm/gems/ruby-1.9.3-p194@global/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets --trace
** Invoke assets:precompile:all (first_time)
** Execute assets:precompile:all
** Invoke assets:precompile:primary (first_time)
** Invoke assets:environment (first_time)
** Execute assets:environment
** Invoke environment (first_time)
** Execute environment
** Invoke tmp:cache:clear (first_time)
** Execute tmp:cache:clear
** Execute assets:precompile:primary
rake aborted!
Unexpected token punc, expected punc (line: 213, col: 13, pos: 5986)

Error
    at new JS_Parse_Error (<eval>:1720:22)
    at js_error (<eval>:1728:15)
    at croak (<eval>:2189:17)
    at token_error (<eval>:2196:17)
    at expect_token (<eval>:2209:17)
    at Object.expect (<eval>:2212:40)
    at Object.1 (<eval>:2763:38)
    at prog1 (<eval>:2770:28)
    at <eval>:2560:51
    at maybe_unary (<eval>:2665:27)
  (in /home/drderp/projects/p/app/assets/javascripts/application.js)
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/execjs-1.4.0/lib/execjs/ruby_racer_runtime.rb:34:in `rescue in block in eval'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/execjs-1.4.0/lib/execjs/ruby_racer_runtime.rb:28:in `block in eval'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/execjs-1.4.0/lib/execjs/ruby_racer_runtime.rb:80:in `block in lock'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/therubyracer-0.10.2/lib/v8/c/locker.rb:13:in `Locker'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/execjs-1.4.0/lib/execjs/ruby_racer_runtime.rb:78:in `lock'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/execjs-1.4.0/lib/execjs/ruby_racer_runtime.rb:27:in `eval'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/execjs-1.4.0/lib/execjs/ruby_racer_runtime.rb:19:in `exec'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/uglifier-1.3.0/lib/uglifier.rb:100:in `compile'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/sprockets/compressors.rb:74:in `compress'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/processing.rb:265:in `block in js_compressor='
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/processor.rb:29:in `call'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/processor.rb:29:in `evaluate'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/tilt-1.3.3/lib/tilt/template.rb:76:in `render'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/context.rb:177:in `block in evaluate'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/context.rb:174:in `each'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/context.rb:174:in `evaluate'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/bundled_asset.rb:26:in `initialize'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/base.rb:244:in `new'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/base.rb:244:in `build_asset'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/index.rb:89:in `block in build_asset'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/caching.rb:19:in `cache_asset'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/index.rb:88:in `build_asset'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/base.rb:163:in `find_asset'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/index.rb:56:in `find_asset'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/sprockets/static_compiler.rb:23:in `block in compile'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/base.rb:212:in `block in each_logical_path'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/base.rb:200:in `block (2 levels) in each_file'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/base.rb:190:in `each'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/base.rb:190:in `each_entry'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/base.rb:198:in `block in each_file'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/base.rb:197:in `each'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/base.rb:197:in `each_file'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/sprockets-2.1.3/lib/sprockets/base.rb:210:in `each_logical_path'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/sprockets/static_compiler.rb:18:in `compile'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/sprockets/assets.rake:56:in `internal_precompile'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/sprockets/assets.rake:70:in `block (3 levels) in <top (required)>'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/home/drderp/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/sprockets/assets.rake:60:in `block (3 levels) in <top (required)>'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/home/drderp/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/bin/rake:19:in `load'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/bin/rake:19:in `<main>'
Tasks: TOP => assets:precompile:primary
rake aborted!
Command failed with status (1): [/home/drderp/.rvm/rubies/ruby-1.9.3-p194/b...]
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/file_utils.rb:53:in `block in create_shell_runner'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/file_utils.rb:45:in `call'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/file_utils.rb:45:in `sh'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/file_utils_ext.rb:39:in `sh'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/file_utils.rb:80:in `ruby'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/file_utils_ext.rb:39:in `ruby'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/sprockets/assets.rake:12:in `ruby_rake_task'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/sprockets/assets.rake:21:in `invoke_or_reboot_rake_task'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/gems/actionpack-3.2.8/lib/sprockets/assets.rake:29:in `block (2 levels) in <top (required)>'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `block in execute'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `block in invoke_with_call_chain'
/home/drderp/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/monitor.rb:211:in `mon_synchronize'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block (2 levels) in top_level'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `block in top_level'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `block in run'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/gems/rake-0.9.2.2/bin/rake:33:in `<top (required)>'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/bin/rake:19:in `load'
/home/drderp/.rvm/gems/ruby-1.9.3-p194@global/bin/rake:19:in `<main>'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:14:in `eval'
/home/drderp/.rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:14:in `<main>'
Tasks: TOP => assets:precompile

- Jeremy Rodi

---

尝试运行 bundle exec rake assets:precompile --trace ... 这可能有助于发现某个地方存在错误标点符号的文件。 - rossta

你的Gemfile中使用的jquery-rails版本是多少？ - rossta

你的 JavaScript 文件中有语法错误。尝试移除/添加 jQuery 和/或任何其他在 application.js（或其他可能被引入的 js 文件）中的代码行，并重新运行编译以查找问题所在。 - rossta

我也遇到了这个问题。有没有办法知道哪个文件导致了错误？ - MrTheWalrus

在 application.js 中，删除 require 直到错误消失，我猜是这样？ - Jeremy Rodi

Answer 1

在js-assets中查找问题的更通用方法：

运行rails console并执行以下操作：

JS_PATH = "app/assets/javascripts/**/*.js"; 
Dir[JS_PATH].each do |file_name|
  puts "\n#{file_name}"
  puts Uglifier.compile(File.read(file_name))
end

- Sergey Reutskiy

---

JS_PATH = 'app/assets/javascripts/**/*.js' Dir[JS_PATH].each do |file| begin Uglifier.compile(File.read(file)) rescue puts file end end如果你有很多 JS 文件需要阅读，这个代码段可以更容易地阅读。 - Dania_es

将第一行更改为 JS_PATH = "app/assets/javascripts/**/*.js*" 将包括 .js.erb 等文件。 - Erica Tripp

@erica 这并不是一个好主意，因为Uglifier.compile需要的是纯 JavaScript 代码，而.js.erb文件中可能会包含嵌入的 Ruby 代码。 - Jeremy Rodi

我必须多次执行此操作，所以我写了一个一行代码：RAILS_ENV=whatever bundle exec rails runner 'Dir["app/assets/javascripts/**/*.js"].each {|file_name| puts "\n#{file_name}"; puts Uglifier.compile(File.read(file_name)) }'。 - Nathan Wallace

很高兴知道 @jeremy。它在我的实例中起作用了，但知道这不是万无一失的解决方案是有帮助的。 - Erica Tripp

Answer 2

我曾经也遇到过这个问题。在浏览器中打开JavaScript控制台，查看是否有错误。我怀疑（因为这是解决我的问题的方法），你的JS文件中有一个错误，很可能是你编写的使用了“>”符号的JS文件。

祝您好运找出错误。

- Joseph Gill

---

保佑你。我的情况是我有一个动态的.js.erb文件。在编译资产时，JavaScript被解释为如果没有ENV ['bla_bla']，会出现语法错误。 :) - anonymous

在我的情况下，这是一个没有扩展名的gem中app/assets/javascripts下的文件。 - mooreds

Answer 3

在我的情况下，我在JS文件中使用了es6语法()=>{...}。将其替换为function(){...}即可解决问题。

- Ryo

---

这对我来说是个问题。看起来Uglifier无法处理ES6语法。 - Daniel Bonnell

我之前遇到了相似的问题，我使用了默认值 function(options = {})，看来我用 ES6 编程时间太长了 ;) - Andrew K

这正是我的情况，我仍然想使用ES6语法。最终我使用了react_on_rails（不是为了React，只是为了使用Webpack继续享受ES2015+）。 - elquimista

Answer 4

这太糟糕了; 我本地没有javascript错误，这意味着资产编译存在问题。

以下是我的解决方法。

如类似问题的评论所建议的（在运行rake assets:precompile于生产环境时出现ExecJS::ProgramError：Unexpected token punc «(»，expected punc «:»），我在production.rb中删除了uglify器（注释掉压缩器代码），并彻底取消了压缩。（我尝试过其他压缩工具；yui没有给出多少信息。closure似乎给了我一些线索，但没有帮助很多）

然后我在本地压缩资源，然后将其推送到生产环境。 （要在本地进行压缩，请使用RAILS_ENV=production rake assets:precompile）

我在服务器上运行，这时javascript错误就浮出水面了。这基本上是文件合并的错误（主要是由于某些被注释掉的内容）。 我去掉了那些行，并发布到生产环境。所有东西都成功了。

我重新添加了uglify器，删除了public/assets/下预编译的资产，并将其推送回生产环境。

我希望这可以帮助其他人！

- Abdo

---

不用谢，@Siwei :-) - Abdo

Answer 5

提醒一下，我遇到了同样的问题，当在生产环境中预编译资产（并推送到Heroku）时，我的几个JS文件会插入一些外国字符，例如...

<<<<<<<<HEAD

===========

>>>>>>(random alphanumeric key)

我刚在我的网站目录中进行了全局搜索，找到了受影响的文件并删除了这些术语 - 一切正常。

- thegreengiant

---

这实际上是Git执行合并时发生的情况。您可能在拉取分支时意外启动了合并，然后没有清理合并结果。请参见此处（向下滚动至“如何呈现冲突”）。 - Jeremy Rodi

Answer 6

必要细节：

对我们来说，这是一个奇怪的小问题，但它让我们找到了真正的错误，并得以解决。

我们使用的是 uglifier gem v 4.1.x，而目前最新版本是 4.2.x。我们更新了 uglifier 版本，以防万一。

结果发现，这个新版本实际上开始输出编译错误发生的实际文件位置。当我们知道错误来自哪里时，就可以修复它。

额外细节：

实际问题是我们有一些 js.erb 文件，这些文件运行一些 Rails 代码来填充一些环境数据，类似于：

const config = {
  abc: <%= Figaro.env.abc %>,
  xyz: <%= Figaro.env.xyz %>
}

我们遇到的错误是：Uglifier :: Error：意外令牌：punc（，）。

因此，很明显Figaro没有给我们所需的值。我们开始修复它，并通过硬编码随机值来检查我们的假设，这样可以成功编译JS。

在这里放置它，以便帮助某些人。

附注：最佳答案非常好，但由于某种原因，它给我们提供了一些随机的jsx相关错误，而不是给我们实际的错误。

- Zia Ul Rehman Mughal

Answer 7

由于某种原因，在Heroku上以及在运行上述代码来“压缩”rails控制台中的javascript时，它不会报告错误的行号！它只是UglifyJS的ruby包装器，您可以在此处在线使用https://skalman.github.io/UglifyJS-online/。所以我只需将有问题的js文件复制并粘贴到此处，它就会报告行号。非常容易。

- salza80

Answer 8

我的问题涉及到两个成功调用。

第一个是mqtt的onSuccess：

onSuccess() {
  console.log("mqtt connected")
};

我用以下方法解决了这个问题：

onSuccess: function() {
  console.log("mqtt connected")
};

第二个是Ajax成功。语法检查器会显示以下错误：

错误：期望方法缩写

但所有内容都将正常工作。

- Radovan Skendzic

Answer 9

验证您在应用程序中添加的新JS文件是否包括由Bower或类似工具添加的插件。

尝试逐个添加以查找有问题的文件。在我的情况下，问题出现在anchor-scroll.js中。当我改为使用anchor-scroll.min时，rake运行正常。

更改如下：

//= require anchor-scroll/scroll

对于：

//= require anchor-scroll/scroll.min

- monteirobrena

Answer 10

"/home/drderp/.rvm/rubies/ruby-1.9.3-p194/bin/ruby /home/drderp/.rvm/gems/ruby-1.9.3-p194@global/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets" 有粗体部分之间有一个空格（在ruby，反斜杠和home之间）。我不知道这是否是一个打字错误，但这可能是你的问题，因为Rails不喜欢目录名中有空格。重新命名该文件夹，然后再次运行代码。

- skmichaelson

---

文件名中应该有一个空格，我正在使用 Ruby 可执行文件来运行 Rake 文件，使用绝对路径。 - Jeremy Rodi