我无法推送到Heroku。当我试图得到某种或那种 ExecJS :: ProgramError：时。我有多个人检查我的代码，似乎没有人能够弄明白。看来我可能有一些错误的东西。
当我执行 git push heroku master 时，我尝试预编译资产时会得到以下信息：
Running: rake assets:precompile
rake aborted!
ExecJS::ProgramError: Unexpected character '#' (line: 16164, col: 0, pos: 471385)
Error
at new JS_Parse_Error (/tmp/execjs20140502-719-9ngq7y.js:2357:10754)
at js_error (/tmp/execjs20140502-719-9ngq7y.js:2357:10973)
at parse_error (/tmp/execjs20140502-719-9ngq7y.js:2357:12691)
at Object.next_token [as input] (/tmp/execjs20140502-719-9ngq7y.js:2357:17713)
at next (/tmp/execjs20140502-719-9ngq7y.js:2357:19012)
at semicolon (/tmp/execjs20140502-719-9ngq7y.js:2357:19857)
at simple_statement (/tmp/execjs20140502-719-9ngq7y.js:2357:22669)
at /tmp/execjs20140502-719-9ngq7y.js:2357:20820
at /tmp/execjs20140502-719-9ngq7y.js:2357:20069
at /tmp/execjs20140502-719-9ngq7y.js:2358:40
(in /tmp/build_e82cf52d-86e5-45ea-83e9-
9841d4de5c60/app/assets/javascripts/application.js)/tmp/build_e82cf52d-86e5-45ea-
83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/execjs-
2.0.2/lib/execjs/external_runtime.rb:68:in `extract_result'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/execjs-2.0.2/lib/execjs/external_runtime.rb:28:in `block in exec'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/execjs-2.0.2/lib/execjs/external_runtime.rb:41:in `compile_to_tempfile'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/execjs-2.0.2/lib/execjs/external_runtime.rb:27:in `exec'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/uglifier-2.5.0/lib/uglifier.rb:186:in `really_compile'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/uglifier-2.5.0/lib/uglifier.rb:110:in `compile'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/uglifier_compressor.rb:25:in `evaluate'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/tilt-1.4.1/lib/tilt/template.rb:103:in `render'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/context.rb:197:in `block in evaluate'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/context.rb:194:in `each'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/context.rb:194:in `evaluate'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/bundled_asset.rb:25:in `initialize'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/base.rb:377:in `new'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/base.rb:377:in `build_asset'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/index.rb:94:in `block in build_asset'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/caching.rb:58:in `cache_asset'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/index.rb:93:in `build_asset'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/base.rb:287:in `find_asset'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/index.rb:61:in `find_asset'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:211:in `block in find_asset'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:257:in `benchmark'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:210:in `find_asset'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:119:in `block in compile'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:118:in `each'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/sprockets/manifest.rb:118:in `compile'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-rails-2.0.1/lib/sprockets/rails/task.rb:60:in `block (3 levels) in define'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-2.11.0/lib/rake/sprocketstask.rb:146:in `with_logger'
/tmp/build_e82cf52d-86e5-45ea-83e9-9841d4de5c60/vendor/bundle/ruby/2.0.0/gems/sprockets-rails-2.0.1/lib/sprockets/rails/task.rb:59:in `block (2 levels) in define'
Tasks: TOP => assets:precompile
(See full trace by running task with --trace)
!
! Precompiling assets failed.
!
! Push rejected, failed to compile Ruby app
To git@heroku.com:dumb-law.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git@heroku.com:dumb-law.git'
答案 0 :(得分：7)
我遇到了同样的问题，最后在网站的控制台输出中发现了原因，它向我显示了带有非法令牌的js文件的错误。在我的例子中，它是一个空的，自动生成的coffeescript文件，我不顾一切地将其重命名为js文件，该文件不使用“＃”作为注释。该网站仍然没有问题，但预编译没有。删除文件解决了我的问题。也许你可以在你的js-console中找到类似的东西：）
答案 1 :(得分：3)
在production.rb中注释解决了我的问题
#config.assets.js_compressor = :uglifier
答案 2 :(得分：1)
答案在 config / environments / production.rb ，您必须将 config.assets.compile = false 更改为 config.assets.compile = true
答案 3 :(得分：0)
这可能发生的一个原因是将自动生成的咖啡脚本重命名为js。它们包含：
# Place all the behaviors and hooks related to the matching controller here.
# All this logic will automatically be available in application.js.
# You can use CoffeeScript in this file: http://coffeescript.org/
导致此错误的原因（因为{j}中#应更改为//。