我正在尝试预编译我的资产以进行生产，但rails似乎没有合作。
$ 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的全部内容：
// 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
Rails版本3.2.8，在Ruby 1.9.3上运行。
修改：
根据要求，这里是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
答案 0 :(得分：132)
在js-assets中找到问题的更通用的方法：
运行rails console和：
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
答案 1 :(得分：18)
我有同样的问题。在浏览器中打开Javascript控制台，查看出错的位置。我怀疑（因为它是我的问题的解决方案），你的一个JS文件有一个错误，很可能你写的任何JS使用“＆gt;”符号
祝你好运错误狩猎。
答案 2 :(得分：11)
就我而言，我在js文件中使用了es6语法Transition。
用()=>{...}替换它可以解决问题。
答案 3 :(得分：9)
这太可怕了;我的本地计算机上没有javascript错误意味着资产编译存在问题。
以下是我如何解决它。
正如对类似问题ExecJS::ProgramError: Unexpected token punc «(», expected punc «:» when running rake assets:precompile on production的评论中所建议的那样，我删除了uglifier（在production.rb中，注释掉压缩器行）并完全压缩。 （我曾尝试过其他压缩机; yui没有提供太多信息。封闭似乎给了我一个暗示，但没有多大帮助）
然后我在本地压缩资产，然后我推向生产。
（要在本地压缩，请使用RAILS_ENV=production rake assets:precompile）
我在服务器上运行，这是javascript错误浮出水面的时候。它基本上是错误的文件合并（主要是由于注释掉的东西）。 我摆脱了这些界限并推迟投入生产。一切都成功了。
我带回了uglifier，删除了public/assets/下的预编译资产并推回了生产。
我希望这有助于某人！
答案 4 :(得分：2)
对此，我有同样的问题和发生的事情，当在生产环境中预编译资产（并推送到Heroku）时，我的几个JS文件被插入了外来字符，沿着......
<<<<<<<<HEAD
===========
>>>>>>(random alphanumeric key)
我刚刚在我的网站目录中为“＆lt;＆lt;”运行全局搜索并迅速找到受影响的文件＆amp;删除这些条款 - 一切正常。
答案 5 :(得分：2)
出于某种原因，在heroku上，当我在rails控制台中运行上面提到的代码“uglify”javascript时，它不会报告错误的行号！ 它只是UglifyJS的ruby包装器，您可以在这里使用https://skalman.github.io/UglifyJS-online/。
所以我只是在这里复制并粘贴了有问题的js文件，并报告了行号。很容易。
答案 6 :(得分：2)
对于我们来说，这是一件奇怪的小事，它使我们发现实际的潜在错误，因此找到了解决方法。
我们有uglifier gem v 4.1.x，在撰写本文时，最新的是4.2.x，我们更新了uglifier版本，以防万一。
发生的事情是，该新版本实际上开始吐出发生编译错误的实际文件位置。当我们知道错误的来源时，我们将其修复。
实际的问题是我们有一些js.erb文件，这些文件运行着一些rails代码来填充一些环境数据，例如：
const config = {
abc: <%= Figaro.env.abc %>,
xyz: <%= Figaro.env.xyz %>
}
我们得到的错误是：Uglifier::Error: Unexpected token: punc (,)。
因此，出于某些原因，很明显，费加罗没有提供我们想要的值。我们继续解决这个问题，并通过对随机值进行硬编码检查了我们的假设，从而成功地编译了JS。
将其放在此处，可能会对某人有所帮助。
PS：Top answer很不错，但是由于某种原因，它给了我们一些与jsx相关的随机错误，而不是给我们一个实际的错误。
答案 7 :(得分：1)
验证您在应用程序中添加的新JS文件是否包含插件和Bower添加的其他类似文件。
尝试逐个添加以查找哪个文件有问题。我的情况是anchor-scroll.js。当我改为使用anchor-scroll.min时，rake运行正常。
改变这个：
//= require anchor-scroll/scroll
有关：
//= require anchor-scroll/scroll.min
答案 8 :(得分：1)
我的问题是两次成功通话。
首先是mqtt onSuccess：
onSuccess() {
console.log("mqtt connected")
};
我解决了：
onSuccess: function() {
console.log("mqtt connected")
};
第二个是Ajax的成功。 Linter会告诉你
错误：预期的方法速记
但一切都会正常运作。
答案 9 :(得分：-4)
“/ 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“
在粗体部分之间（红宝石，反斜杠和家庭之间）有一个空格。
我不知道这是不是一个错字，但它可能是你的问题，因为Rails不喜欢目录名中的空格。重命名该文件夹，然后再次尝试运行代码。