react-native - 加载依赖关系图...jest-haste-map: Watchman crawl failed

Question

我不能只用“react-native init AwesomeProject”和“react-native run-ios”创建一个空项目。我收到以下错误。当我将 EXPO 与 Bare Workflow 一起使用时，也会发生这种情况。

守望者-v：4.9.0

我的 package.json 说：“react-native”：“0.59.9”

有什么帮助吗？我在网上看到了许多类似的问题，但没有一个建议的解决方案对我有用。

    Loading dependency graph...jest-haste-map: Watchman crawl failed. Retrying once with node crawler.
    Usually this happens when watchman isn't running. Create an empty `.watchmanconfig` file in your project's root folder or initialize a git or hg repository in your project.
    Error: Watchman error: The watchman connection was closed. Make sure watchman is running for this project. See https://facebook.github.io/watchman/docs/troubleshooting.html.
events.js:167
    throw er; // Unhandled 'error' event
    ^



Error: The watchman connection was closed
    at Client.cancelCommands ({mypath}/node_modules/fb-watchman/index.js:52:15)
    at Socket.<anonymous> ({mypath}/node_modules/fb-watchman/index.js:128:12)
    at Socket.emit (events.js:187:15)
    at endReadableNT (_stream_readable.js:1092:12)
    at process._tickCallback (internal/process/next_tick.js:63:19)
Emitted 'error' event at:
    at handleError ({mypath}/node_modules/metro/node_modules/jest-haste-map/build/lib/WatchmanWatcher.js:362:10)
    at Object.onWatchProject [as cb] ({mypath}/node_modules/metro/node_modules/jest-haste-map/build/lib/WatchmanWatcher.js:135:9)
    at {mypath}/node_modules/fb-watchman/index.js:66:9
    at Array.forEach (<anonymous>)
    at Client.cancelCommands ({mypath}/node_modules/fb-watchman/index.js:65:8)
    at Socket.<anonymous> ({mypath}/node_modules/fb-watchman/index.js:128:12)
    [... lines matching original stack trace ...]
    at process._tickCallback (internal/process/next_tick.js:63:19)
Process terminated. Press <enter> to close the window

标签： react-nativeexpowatchman

Answer 1

回答我自己的问题。罪魁祸首原来是.watchmanconfig文件。该文件的内容如下：

{"fsevents_latency": "0.01"}

我已将值从 string 更改为 int，现在一切都对我有用：

{"fsevents_latency": 0.01}