我有一个反应原生的应用程序，我试图使用VS AppCenter构建，我很难搞清楚构建错误是什么。查看日志，它似乎位于步骤6 Generate Source Map
错误是否为rxjs错误Property left of AssignmentExpression expected node to be of a type ["LVal"] but instead got "ConditionalExpression"并且导致构建失败的原因是什么？如果是这样，它如何运行并在本地构建就好了？
##[section]Starting: Generate source map
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Task : Command Line
Description : This is an early preview. Run a command line script using cmd.exe on Windows and bash on macOS and Linux.
Version : 2.127.0
Author : Microsoft Corporation
Help : [More Information](https://go.microsoft.com/fwlink/?LinkID=613735)
==============================================================================
Generating script.
[command]/bin/bash --noprofile --norc /Users/vsts/agent/2.134.2/work/_temp/foo.sh
Found index.js for ReactNative index.
Scanning folders for symlinks in /Users/vsts/agent/2.134.2/work/1/s/node_modules (33ms)
Scanning folders for symlinks in /Users/vsts/agent/2.134.2/work/1/s/node_modules (31ms)
Loading dependency graph, done.
warning: the transform cache was reset.
/Users/vsts/agent/2.134.2/work/1/s/node_modules/rxjs/symbol/iterator.js: /Users/vsts/agent/2.134.2/work/1/s/node_modules/rxjs/symbol/iterator.js: Property left of AssignmentExpression expected node to be of a type ["LVal"] but instead got "ConditionalExpression"
##[error]Bash exited with code '1'.
##[section]Finishing: Generate source map
谷歌搜索我发现这个潜在相关的错误https://github.com/facebook/react-native/issues/6063，但大多数解决方案似乎是更新为过时的巴贝尔预设。
以下是我的依赖
"react": "16.3.1",
"react-native": "^0.55.3",
"devDependencies": {
"babel-jest": "22.4.3",
"babel-preset-react-native": "4.0.0",
"babel-preset-react-native-stage-0": "^1.0.1",
"jest": "22.4.3",
"react-test-renderer": "16.3.1"
},