【发布时间】：2015-08-21 02:26:09
【问题描述】：
我正在尝试将一个新的 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，它在那里也运行良好。
但在尝试部署到 heroku 时，情况就不同了。我一直在网上搜索与以下类似的错误：
ExecJS::ProgramError: Unexpected token name «of», expected punc «;» (line: 29885, col: 15, pos: 861062)
我在stackoverflow上看到的大部分问题都在trace中有错误提示。但我的踪迹并没有提供太多线索（第 29885 行......？意外的标记“of”......在哪里？？）。我有一个问题here，我在其中概述了我在 js 开发者控制台中发现的内容，但它把我引向了错误的方向。
所有页面在本地都运行良好。
除了浏览器开发者控制台之外，还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 日志显示的信息与上述相同。
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：
在删除js相关文件并尝试一一部署后，发现有问题的代码如下（删除它可以让我毫无问题地部署到heroku....奇怪的是，任何使用此代码的页面都在开发中在浏览器开发者控制台中不会产生 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>");
}
});
【问题讨论】：
标签： javascript ruby-on-rails twitter-bootstrap heroku