Ecmascript 6 未知插件"；“外援”；请参阅；“基础”；在0，这意味着什么？

我正在构建一个glimmerjs应用程序，如下所示：

ember build --environment test

错误是：

Build failed.
Build Error (RollupWithDependencies)

Unknown plugin "external-helpers" specified in "base" at 0, attempted to resolve relative to "/Users/givanse/code/pretender"

Stack Trace and Error Report: /var/folders/6y/8lyh7xn954v714ktlj5nmndw0000gn/T/error.dump.099d52a5b4b21a993722a86f9f2693ec.log

在日志中：

nodeAnnotation: RollupWithDependencies                                                                                
  - nodeName: RollupWithDependencies                                                                                      
  - originalErrorMessage: Unknown plugin "external-helpers" specified in "base" at 0, attempted to resolve relative to "/Users/givanse/code/pretender"
  - stack: Error: Unknown plugin "external-helpers" specified in "base" at 0, attempted to resolve relative to "/Users/givanse/code/pretender"
    at error (/Users/givanse/code/project-pulse/node_modules/rollup/dist/rollup.js:170:12)
    at /Users/givanse/code/project-pulse/node_modules/rollup/dist/rollup.js:8937:6                                        
    at <anonymous>

nodeanotation:RollupWithDependencies
-节点名称：RollupWithDependencies
-originalErrorMessage:在0的“base”中指定的未知插件“external helpers”，试图相对于“/Users/givanse/code/Invoker”解析
-堆栈：错误：在0的“base”中指定了未知插件“external helpers”，试图相对于“/Users/givanse/code/invoker”解析
错误（/Users/givanse/code/project pulse/node_modules/rollup/dist/rollup.js:170:12）
at/Users/givanse/code/project pulse/node_modules/rollup/dist/rollup.js:8937:6
在

在那里添加一些日志显示，调用
babel.transform
时会发生错误

发帖不希望得到答案，而只是一个线索或理论。
看来这是在什么地方丢失的