React native 使用Expo进行本机反应：错误：Metro捆绑程序进程已退出，代码为1

我正在尝试使用expo在react中运行示例程序

我使用了：

E:\ReactNative\Samples\rn starter>npm start

我收到错误信息：

> @ start E:\ReactNative\Samples\rn-starter
> expo start

Starting project at E:\ReactNative\Samples\rn-starter
Expo DevTools is running at http://localhost:19002
Opening DevTools in the browser... (press shift-d to disable)
error Invalid regular expression: /(.*\\__fixtures__\\.*|node_modules[\\\]react[\\\]dist[\\\].*|website\\node_modules\\.*|heapCapture\\bundle\.js|.*\\__tests__\\.*)$/: Unterminated character class. Run CLI with --verbose flag for more details.

Metro Bundler process exited with code 1
Error: Metro Bundler process exited with code 1
    at ChildProcess.<anonymous> (C:\@expo\xdl@56.8.0\src\Project.ts:1834:16)
    at Object.onceWrapper (events.js:300:26)
    at ChildProcess.emit (events.js:210:5)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @ start: `expo start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @ start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Devrath\AppData\Roaming\npm-cache\_logs\2019-11-20T08_48_21_094Z-debug.log

@start E:\ReactNative\Samples\rn starter
>世博会开幕
正在E:\ReactNative\Samples\rn starter启动项目
Expo DevTools正在运行http://localhost:19002
正在浏览器中打开DevTools。。。（按shift-d键禁用）
错误无效的正则表达式：/（.\\\\\\\\\\\\\.\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\]dist[\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\.$/：未终止字符类。有关详细信息，请使用--verbose标志运行CLI。
Metro捆绑程序进程已退出，代码为1
错误：Metro捆绑程序进程已退出，代码为1
在这个过程中。（C:\@世博会\xdl@56.8.0\src\Project.ts:1834:16）
在Object.onceWrapper（events.js:300:26）
在ChildProcess.emit上（events.js:210:5）
在Process.ChildProcess.\u handle.onexit（内部/child\u Process.js:272:12）
npm错误！代码失效循环
npm错误！错误1
npm ERR！@开始：`世博会开始`
npm错误！退出状态1
npm错误！
npm错误！在@start脚本中失败。
npm错误！这可能不是npm的问题。上面可能还有其他日志输出。
npm错误！此运行的完整日志可在以下位置找到：
npm错误！C:\Users\Devrath\AppData\Roaming\npm cache\\u logs\2019-11-20T08\u 48\u 21\u 094Z-debug.log

---

---

我也遇到了同样的问题，当我将Node.Js版本更新到12.13.1时，似乎是在解释正则表达式时出错了：

选项1:

> @ start E:\ReactNative\Samples\rn-starter
> expo start

Starting project at E:\ReactNative\Samples\rn-starter
Expo DevTools is running at http://localhost:19002
Opening DevTools in the browser... (press shift-d to disable)
error Invalid regular expression: /(.*\\__fixtures__\\.*|node_modules[\\\]react[\\\]dist[\\\].*|website\\node_modules\\.*|heapCapture\\bundle\.js|.*\\__tests__\\.*)$/: Unterminated character class. Run CLI with --verbose flag for more details.

Metro Bundler process exited with code 1
Error: Metro Bundler process exited with code 1
    at ChildProcess.<anonymous> (C:\@expo\xdl@56.8.0\src\Project.ts:1834:16)
    at Object.onceWrapper (events.js:300:26)
    at ChildProcess.emit (events.js:210:5)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @ start: `expo start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @ start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Devrath\AppData\Roaming\npm-cache\_logs\2019-11-20T08_48_21_094Z-debug.log

在您的项目中，转到

\node\u modules\metro config\src\defaults\blacklist.js

更改：

var sharedBlacklist = [
  /node_modules[/\\]react[/\\]dist[/\\].*/,
  /website\/node_modules\/.*/,
  /heapCapture\/bundle\.js/,
  /.*\/__tests__\/.*/
];

到

选项2:

> @ start E:\ReactNative\Samples\rn-starter
> expo start

Starting project at E:\ReactNative\Samples\rn-starter
Expo DevTools is running at http://localhost:19002
Opening DevTools in the browser... (press shift-d to disable)
error Invalid regular expression: /(.*\\__fixtures__\\.*|node_modules[\\\]react[\\\]dist[\\\].*|website\\node_modules\\.*|heapCapture\\bundle\.js|.*\\__tests__\\.*)$/: Unterminated character class. Run CLI with --verbose flag for more details.

Metro Bundler process exited with code 1
Error: Metro Bundler process exited with code 1
    at ChildProcess.<anonymous> (C:\@expo\xdl@56.8.0\src\Project.ts:1834:16)
    at Object.onceWrapper (events.js:300:26)
    at ChildProcess.emit (events.js:210:5)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @ start: `expo start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @ start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Devrath\AppData\Roaming\npm-cache\_logs\2019-11-20T08_48_21_094Z-debug.log

将Node.js版本降级至12.9或更高版本

---

希望这对您有所帮助。

您正在运行哪个版本的expo cli？还可以尝试

expo start-c