对Rails部署的Heroku ExecJS程序错误进行故障排除

时间：2015-08-21 02:26:10

标签： javascript ruby-on-rails twitter-bootstrap heroku

我正在尝试将新的rails应用程序部署到heroku。该应用程序在我的机器上运行良好，我可以将它从github拉到另一台机器上，它也很好用。

但是在尝试部署到heroku时，这是一个不同的故事。我一直在网上搜索类似的错误：

ExecJS::ProgramError: Unexpected token name «of», expected punc «;» (line: 29885, col: 15, pos: 861062)

我在stackoverflow上看到的大多数问题都在跟踪中都有错误线索。但是我的追踪并没有提供太多线索（第29885行......？意外的令牌＆＃34;＆＃34; ......其中??）。我有一个问题here，其中我概述了我在js开发者控制台中找到的内容，但它引导我走向错误的方向。

所有页面都在本地运行良好。

除浏览器开发人员控制台之外，有哪些方法可以解决此类错误？

$ RAILS_ENV=production bundle exec rake assets:precompile --trace
** Invoke assets:precompile (first_time)
** Invoke assets:environment (first_time)
** Execute assets:environment
** Invoke environment (first_time)
** Execute environment
** Execute assets:precompile
rake aborted!
ExecJS::ProgramError: Unexpected token name «of», expected punc «;» (line: 29885, col: 15, pos: 861062)

Error
    at new JS_Parse_Error (/private/var/folders/7g/kc34ywms5j9bb5qgfcr0c7tw0000gn/T/execjs20150822-14064-japh2djs:2359:10623)
    at js_error (/private/var/folders/7g/kc34ywms5j9bb5qgfcr0c7tw0000gn/T/execjs20150822-14064-japh2djs:2359:10842)
    at croak (/private/var/folders/7g/kc34ywms5j9bb5qgfcr0c7tw0000gn/T/execjs20150822-14064-japh2djs:2359:19086)
    at token_error (/private/var/folders/7g/kc34ywms5j9bb5qgfcr0c7tw0000gn/T/execjs20150822-14064-japh2djs:2359:19223)
    at expect_token (/private/var/folders/7g/kc34ywms5j9bb5qgfcr0c7tw0000gn/T/execjs20150822-14064-japh2djs:2359:19446)
    at expect (/private/var/folders/7g/kc34ywms5j9bb5qgfcr0c7tw0000gn/T/execjs20150822-14064-japh2djs:2359:19584)
    at regular_for (/private/var/folders/7g/kc34ywms5j9bb5qgfcr0c7tw0000gn/T/execjs20150822-14064-japh2djs:2359:23361)
    at for_ (/private/var/folders/7g/kc34ywms5j9bb5qgfcr0c7tw0000gn/T/execjs20150822-14064-japh2djs:2359:23316)
    at /private/var/folders/7g/kc34ywms5j9bb5qgfcr0c7tw0000gn/T/execjs20150822-14064-japh2djs:2359:21220
    at /private/var/folders/7g/kc34ywms5j9bb5qgfcr0c7tw0000gn/T/execjs20150822-14064-japh2djs:2359:19957
    at block_ (/private/var/folders/7g/kc34ywms5j9bb5qgfcr0c7tw0000gn/T/execjs20150822-14064-japh2djs:2359:24599)new JS_Parse_Error ((execjs):2359:10623)
js_error ((execjs):2359:10842)
croak ((execjs):2359:19086)
token_error ((execjs):2359:19223)
expect_token ((execjs):2359:19446)
expect ((execjs):2359:19584)
regular_for ((execjs):2359:23361)
for_ ((execjs):2359:23316)
(execjs):2359:21220
(execjs):2359:19957
block_ ((execjs):2359:24599)
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/execjs-2.6.0/lib/execjs/external_runtime.rb:39:in `exec'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/execjs-2.6.0/lib/execjs/external_runtime.rb:21:in `eval'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/execjs-2.6.0/lib/execjs/external_runtime.rb:46:in `call'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/uglifier-2.7.1/lib/uglifier.rb:212:in `run_uglifyjs'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/uglifier-2.7.1/lib/uglifier.rb:179:in `compile'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/uglifier_compressor.rb:52:in `call'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/uglifier_compressor.rb:28:in `call'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/processor_utils.rb:75:in `call_processor'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/processor_utils.rb:57:in `block in call_processors'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/processor_utils.rb:56:in `reverse_each'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/processor_utils.rb:56:in `call_processors'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/loader.rb:126:in `load_from_unloaded'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/loader.rb:60:in `block in load'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/loader.rb:286:in `fetch_asset_from_dependency_cache'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/loader.rb:44:in `load'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/cached_environment.rb:20:in `block in initialize'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/cached_environment.rb:47:in `yield'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/cached_environment.rb:47:in `load'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/base.rb:66:in `find_asset'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/base.rb:73:in `find_all_linked_assets'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/manifest.rb:138:in `block in find'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/legacy.rb:114:in `block (2 levels) in logical_paths'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/path_utils.rb:223:in `block in stat_tree'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/path_utils.rb:207:in `block in stat_directory'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/path_utils.rb:204:in `each'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/path_utils.rb:204:in `stat_directory'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/path_utils.rb:222:in `stat_tree'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/legacy.rb:105:in `each'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/legacy.rb:105:in `block in logical_paths'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/legacy.rb:104:in `each'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/legacy.rb:104:in `logical_paths'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/manifest.rb:136:in `find'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/sprockets/manifest.rb:162:in `compile'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-rails-2.3.2/lib/sprockets/rails/task.rb:70:in `block (3 levels) in define'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-3.3.2/lib/rake/sprocketstask.rb:147:in `with_logger'
/Users/Travis/.rvm/gems/ruby-2.2.1/gems/sprockets-rails-2.3.2/lib/sprockets/rails/task.rb:69:in `block (2 levels) in define'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/task.rb:240:in `call'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/task.rb:240:in `block in execute'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/task.rb:235:in `each'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/task.rb:235:in `execute'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/task.rb:179:in `block in invoke_with_call_chain'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/monitor.rb:211:in `mon_synchronize'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/task.rb:172:in `invoke_with_call_chain'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/task.rb:165:in `invoke'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:150:in `invoke_task'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:106:in `block (2 levels) in top_level'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:106:in `each'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:106:in `block in top_level'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:115:in `run_with_threads'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:100:in `top_level'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:78:in `block in run'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:176:in `standard_exception_handling'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/rake/application.rb:75:in `run'
/Users/Travis/.rvm/rubies/ruby-2.2.1/lib/ruby/gems/2.2.0/gems/rake-10.4.2/bin/rake:33:in `<top (required)>'
/Users/Travis/.rvm/gems/ruby-2.2.1/bin/rake:23:in `load'
/Users/Travis/.rvm/gems/ruby-2.2.1/bin/rake:23:in `<main>'
/Users/Travis/.rvm/gems/ruby-2.2.1/bin/ruby_executable_hooks:15:in `eval'
/Users/Travis/.rvm/gems/ruby-2.2.1/bin/ruby_executable_hooks:15:in `<main>'
Tasks: TOP => assets:precompile

Heroku日志向我显示与上述相同的信息。

我的application.js文件：

// 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 any plugin's vendor/assets/javascripts directory 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
// compiled file.
//
// Read Sprockets README (https://github.com/sstephenson/sprockets#sprockets-directives) for details
// about supported directives.
//
//= require jquery
//= require jquery_ujs
//= require dataTables/jquery.dataTables
//= require dataTables/bootstrap/3/jquery.dataTables.bootstrap
//= require chartkick
//= require turbolinks
//= require bootstrap-sprockets
//= require_tree .



更新：

删除js相关文件并尝试逐个部署之后，事实证明违规代码如下（删除它允许我没有问题地部署到heroku ......奇怪的是，在开发中使用此代码的任何页面在浏览器开发者控制台中不会产生任何js错误，并且它们可以正常运行）

//assets/javascripts/accounts.js

$(document).on('page:change', function() {
  // var getFieldCount = function() {
  //   var accountType = $('#account_type').val();
  //   return $('.field.' + accountType).size();
  // };

  // Add classes to label each field under its account type for later easy grabbing in jQueries
  var accountFields = {}
  try {
    accountFields = JSON.parse($('#account_fields').val());
  } catch(jsonException) {
    //ignore errors without crashing
  }
  for (var accountType in accountFields) {
    var fields = accountFields[accountType];
    for (field of fields) {
      var field = $('#account_' + field).closest('.field');
      field.addClass(accountType);
    }
  }

  if ($('#edit_account').size() > 0) {
    var showCorrectFieldsPerAccountType = function() {
      $('.field').hide();
      var accountType = $('#account_type').val();
      var fields = accountFields[accountType];
      for (field of fields) {
        var field = $('#account_' + field).closest('.field');
        field.show();
      }
    };
    $('#account_type').change(showCorrectFieldsPerAccountType);
    showCorrectFieldsPerAccountType();
  }

  if ($('#new_account').size() > 0) {
    var showCorrectFieldsPerAccountType = function() {
      $('.field').hide();
      var accountType = $('#account_type').val();
      var fields = accountFields[accountType];
      for (field of fields) {
        var field = $('#account_' + field).closest('.field');
        field.show();
      }
    };
    $('#account_type').change(showCorrectFieldsPerAccountType);
    showCorrectFieldsPerAccountType();

    $("#account_type").prepend("<option value='' selected='selected'>Please Select</option>");
  }

});

2 个答案:

答案 0 :(得分：0)

看起来您的Javascript存在一些问题，也可能来自您动态生成的Javascript文件。虽然应用程序在开发模式下工作，但如果有任何Javascript错误，它会在部署时在预编译过程中抛出错误，因此您会收到此错误。

寻找此问题的良好开端是在浏览器中查看您的Javascript console并查看错误发生的位置。您的任何JS文件都可能出错，并且很可能在开发模式下的Javascript控制台中可见。

答案 1 :(得分：0)

在Gemfile中添加gem therubyracer然后捆绑安装并推送它将起作用的更改

Gemfile中的

gem 'therubyracer'

然后

app_root>$ bundle install

然后

app_root＆gt; $ bundle exec rake assets：precompile

然后将预编译资产添加为git commit

然后

app_root>$ git push heroku master
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