After adding this gem, heroku isn't able to precompile assets

[ilovemysillybanana]

After installing and configuring this gem, I get this issue. Has anyone else experienced this before? Removal of the gem fixes the issue.

If you would like to see the source for the project I'm working on to make sure it's something from this gem:

https://github.com/ilovemysillybanana/pastie

remote: -----> Preparing app for Rails asset pipeline remote: Running: rake assets:precompile remote: rake aborted! remote: ExecJS::ProgramError: Unexpected token punc «{», expected punc «,» (line: 17449, col: 75, pos: 529891) remote: Error remote: at new JS_Parse_Error (/tmp/execjs20160414-361-1vm04s1js:2659:11936) remote: at js_error (/tmp/execjs20160414-361-1vm04s1js:2659:12155) remote: at croak (/tmp/execjs20160414-361-1vm04s1js:2659:20622) remote: at token_error (/tmp/execjs20160414-361-1vm04s1js:2659:20759) remote: at expect_token (/tmp/execjs20160414-361-1vm04s1js:2659:20982) remote: at expect (/tmp/execjs20160414-361-1vm04s1js:2659:21120) remote: at ctor.argnames (/tmp/execjs20160414-361-1vm04s1js:2659:25664) remote: at function_ (/tmp/execjs20160414-361-1vm04s1js:2659:25728) remote: at expr_atom (/tmp/execjs20160414-361-1vm04s1js:2659:28965) remote: at maybe_unary (/tmp/execjs20160414-361-1vm04s1js:2659:31652) remote: at expr_ops (/tmp/execjs20160414-361-1vm04s1js:2660:404) remote: at maybe_conditional (/tmp/execjs20160414-361-1vm04s1js:2660:496) remote: at maybe_assign (/tmp/execjs20160414-361-1vm04s1js:2660:939)new JS_Parse_Error ((execjs):2659:11936) remote: js_error ((execjs):2659:12155) remote: croak ((execjs):2659:20622) remote: token_error ((execjs):2659:20759) remote: expect_token ((execjs):2659:20982) remote: expect ((execjs):2659:21120) remote: ctor.argnames ((execjs):2659:25664) remote: function_ ((execjs):2659:25728) remote: expr_atom ((execjs):2659:28965) remote: maybe_unary ((execjs):2659:31652) remote: expr_ops ((execjs):2660:404) remote: maybe_conditional ((execjs):2660:496) remote: maybe_assign ((execjs):2660:939) remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/execjs-2.6.0/lib/execjs/external_runtime.rb:39:inexec'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/execjs-2.6.0/lib/execjs/external_runtime.rb:21:in eval' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/execjs-2.6.0/lib/execjs/external_runtime.rb:46:incall'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/uglifier-2.7.2/lib/uglifier.rb:212:in run_uglifyjs' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/uglifier-2.7.2/lib/uglifier.rb:179:incompile'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/uglifier_compressor.rb:52:in call' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/uglifier_compressor.rb:28:incall'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:75:in call_processor' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:57:inblock in call_processors'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:56:in reverse_each' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/processor_utils.rb:56:incall_processors'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/loader.rb:134:in load_from_unloaded' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/loader.rb:60:inblock in load'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/loader.rb:318:in fetch_asset_from_dependency_cache' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/loader.rb:44:inload'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/cached_environment.rb:20:in block in initialize' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/cached_environment.rb:47:inload'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/base.rb:66:in find_asset' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/base.rb:73:infind_all_linked_assets'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/manifest.rb:142:in block in find' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/legacy.rb:114:inblock (2 levels) in logical_paths'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:225:in block in stat_tree' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:209:inblock in stat_directory'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:206:in each' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:206:instat_directory'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/path_utils.rb:224:in stat_tree' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/legacy.rb:105:ineach'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/legacy.rb:105:in block in logical_paths' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/legacy.rb:104:ineach'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/legacy.rb:104:in logical_paths' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/manifest.rb:140:infind'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/sprockets/manifest.rb:168:in compile' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-rails-3.0.4/lib/sprockets/rails/task.rb:68:inblock (3 levels) in define'
remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-3.5.2/lib/rake/sprocketstask.rb:147:in with_logger' remote: /tmp/build_089aae9379b515e85242da57b3a9066f/vendor/bundle/ruby/2.3.0/gems/sprockets-rails-3.0.4/lib/sprockets/rails/task.rb:67:inblock (2 levels) in define'
remote: Tasks: TOP => assets:precompile
remote: (See full trace by running task with --trace)
remote: !
remote: ! Precompiling assets failed.
remote: !
remote:
remote: ! Push rejected, failed to compile Ruby app
remote:
remote: Verifying deploy...
remote:
remote: ! Push rejected to pastie.
`