我曾经使用 npm，但最近改用了 yarn。当我运行时，yarn test它显示所有测试都通过了，但下面说error Command failed with exit code 1没有其他可能导致此错误的信息
节点版本：6.3.1
纱线版本：0.16.3
潜在原因
console.error node_modules/core-js/modules/es6.promise.js:117
Unhandled promise rejection Error: Actions may not be an undefined.
at dispatch (/node_modules/redux-mock-store/lib/index.js:35:19)
at /node_modules/redux-thunk/lib/index.js:14:16
at dispatch (/node_modules/redux/lib/applyMiddleware.js:45:18)
at /src/actions/ontologies.js:159:7
at run (/node_modules/core-js/modules/es6.promise.js:87:22)
at /node_modules/core-js/modules/es6.promise.js:100:28
at flush (/node_modules/core-js/modules/_microtask.js:18:9)
at process._tickCallback (internal/process/next_tick.js:103:7)