Sbt-LESS: TypeError: [object Object] 不是函数，它是对象答案

【问题标题】：Sbt-LESS: TypeError: [object Object] is not a function, it is objectSbt-LESS: TypeError: [object Object] 不是函数，它是对象
【发布时间】：2016-03-11 03:22:27
【问题描述】：

在 Play 项目中将 Sbt-less 从 1.0.6 更新到 1.1.0 后，当我尝试 git push heroku master 时收到此错误输出：

remote:        [error] TypeError: [object Object] is not a function, it is object. (/tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js#4)    at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js:4
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less-node/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:14
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:3
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:497
remote:        [error]     at startup (trireme.js:142)
remote:        [error]     at trireme.js:923
remote:        [info] 
remote:        [error] TypeError: [object Object] is not a function, it is object. (/tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js#4)    at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js:4
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less-node/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:14
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:3
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:497
remote:        [error]     at startup (trireme.js:142)
remote:        [error]     at trireme.js:923
remote:        [info] 
remote:        [error] TypeError: [object Object] is not a function, it is object. (/tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js#4)    at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js:4
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less-node/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:14
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:3
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:497
remote:        [error]     at startup (trireme.js:142)
remote:        [error]     at trireme.js:923
remote:        [info] 
remote:        [error] TypeError: [object Object] is not a function, it is object. (/tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js#4)    at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js:4
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less-node/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:14
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:3
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:497
remote:        [error]     at startup (trireme.js:142)
remote:        [error]     at trireme.js:923
remote:        [info] 
remote:        [error] TypeError: [object Object] is not a function, it is object. (/tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js#4)    at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js:4
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less-node/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:14
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:3
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:497
remote:        [error]     at startup (trireme.js:142)
remote:        [error]     at trireme.js:923
remote:        [info] 
remote:        com.typesafe.sbt.jse.SbtJsTask$JsTaskFailure: TypeError: [object Object] is not a function, it is object. (/tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js#4)    at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js:4
remote:            at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less-node/index.js:1
remote:            at module.js:456
remote:            at module.js:474
remote:            at module.js:356
remote:            at module.js:312
remote:            at module.js:364
remote:            at require (module.js:380)
remote:            at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/index.js:1
remote:            at module.js:456
remote:            at module.js:474
remote:            at module.js:356
remote:            at module.js:312
remote:            at module.js:364
remote:            at require (module.js:380)
remote:            at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:14
remote:            at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:3
remote:            at module.js:456
remote:            at module.js:474
remote:            at module.js:356
remote:            at module.js:312
remote:            at module.js:497
remote:            at startup (trireme.js:142)
remote:            at trireme.js:923
remote:        
remote:         at com.typesafe.sbt.jse.SbtJsTask$$anonfun$com$typesafe$sbt$jse$SbtJsTask$$executeJsOnEngine$1.apply(SbtJsTask.scala:195)
remote:         at com.typesafe.sbt.jse.SbtJsTask$$anonfun$com$typesafe$sbt$jse$SbtJsTask$$executeJsOnEngine$1.apply(SbtJsTask.scala:167)
remote:         at scala.util.Success$$anonfun$map$1.apply(Try.scala:206)
remote:         at scala.util.Try$.apply(Try.scala:161)
remote:         at scala.util.Success.map(Try.scala:206)
remote:         at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235)
remote:         at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:235)
remote:         at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)
remote:         at scala.concurrent.impl.ExecutionContextImpl$$anon$3.exec(ExecutionContextImpl.scala:107)
remote:         at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
remote:         at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
remote:         at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
remote:         at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
remote:        [error] (web-assets:less) com.typesafe.sbt.jse.SbtJsTask$JsTaskFailure: TypeError: [object Object] is not a function, it is object. (/tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js#4)    at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less/index.js:4
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/lib/less-node/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/node-modules/webjars/less/index.js:1
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:364
remote:        [error]     at require (module.js:380)
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:14
remote:        [error]     at /tmp/scala_buildpack_build_dir/project/target/less/sbt-less-1.1.0.jar:3
remote:        [error]     at module.js:456
remote:        [error]     at module.js:474
remote:        [error]     at module.js:356
remote:        [error]     at module.js:312
remote:        [error]     at module.js:497
remote:        [error]     at startup (trireme.js:142)
remote:        [error]     at trireme.js:923
remote:        [error] Total time: 5 s, completed Mar 11, 2016 3:18:15 AM
remote: 
remote:  !     ERROR: Failed to run sbt!
remote:        We're sorry this build is failing. If you can't find the issue in application
remote:        code, please submit a ticket so we can help: https://help.heroku.com
remote:        You can also try reverting to the previous version of the buildpack by running:
remote:        $ heroku buildpacks:set https://github.com/heroku/heroku-buildpack-scala#previous-version
remote:        
remote:        Thanks,
remote:        Heroku
remote: 
remote: 
remote:  !     Push rejected, failed to compile Play 2.x - Scala app
remote: 
remote: Verifying deploy...
remote: 
remote: !       Push rejected to vetpros-stage.
remote: 
To https://git.heroku.com/vetpros-stage.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/vetpros-stage.git'

项目本身在我正在编码的机器上运行良好。我试过heroku run "sbt clean-files" 似乎没有效果。我在某处读到删除/target 文件夹也可能有帮助，但是当我尝试从 Heroku 的 bash 终端中删除它们时，它并没有做出改变。任何建议都会有所帮助，在此先感谢您！

编辑：我想出了一个解决方法，相当明显（你们很多人可能已经知道了），但是每次上传到 Heroku 时，您都可以简单地恢复到 sbt-less 1.0.6。烦人，但至少它完成了工作。

【问题讨论】：

您有没有机会找到解决方案？不过，您仍然可以使用 Heroku Sbt 插件 (devcenter.heroku.com/articles/…) 进行部署。
目前还没有解决方案。不过我会检查链接，谢谢。不过，我想出了一个解决方法，我会编辑我的答案以包含它。
Sbt 插件解决方案的缺点是上传 slug 比告诉 Heroku 完成所有工作需要更多的时间（对我来说大约 45 分钟）。仅供参考，命令是activator stage deployHeroku，而不是sbt stage deployHeroku。我也切换回 1.0.6。

标签： scala heroku playframework sbt xsbt-web-plugin

【解决方案1】：

尝试通过设置运行干净的构建：

$ heroku config:set SBT_CLEAN="true"

然后重新部署您的应用。

heroku run 命令在与您的应用程序隔离的单独容器中运行，并且不会永久修改文件系统（即slug image）。

【讨论】：

+1 获取信息，不幸的是我仍然遇到同样的错误。我不明白怎么了！ :(

【解决方案2】：

我在本地遇到了同样的问题，诀窍不是（仅？）删除 target 文件夹，还删除 project/target（甚至可能是 project/project，但在我的情况下这不是必需的）。

也许如果您尝试从 Heroku 的 bash 终端中删除它们，它也适用于您。

（我从 sbt-less 项目的 issue #68 (LESS compilation fails with exception) 获得了这个解决方案。）

【讨论】：