javascript - 错误 : bundling failed: TypeError: Cannot read property 'bindings' of null

Question

我在运行 react-native 应用程序时也遇到了同样的问题。我使用的版本如下:

native react :0.57.1 react native cli:2.0.1节点:v8.11.3npm:5.6.0

Babel 版本详情:

"devDependencies": { "@babel/runtime": "^7.0.0", "babel-jest": "20.0.3", "babel-preset-react-native": "^2.1.0", "jest": "20.0.4", "react-test-renderer": "16.0.0-alpha.12", "schedule": "^0.4.0" }, "jest": { "preset": "react-native" } }

错误:

error: bundling failed: TypeError: Cannot read property 'bindings' of null at Scope.moveBindingTo (/home/manish/Desktop/Practice/donut/node_modules/@babel/traverse/lib/scope/index.js:867:13) at BlockScoping.updateScopeInfo (/home/manish/Desktop/Practice/donut/node_modules/babel-plugin-transform-es2015-block-scoping/lib/index.js:364:17) at BlockScoping.run (/home/manish/Desktop/Practice/donut/node_modules/babel-plugin-transform-es2015-block-scoping/lib/index.js:330:12) at PluginPass.BlockStatementSwitchStatementProgram (/home/manish/Desktop/Practice/donut/node_modules/babel-plugin-transform-es2015-block-scoping/lib/index.js:70:24) at newFn (/home/manish/Desktop/Practice/donut/node_modules/@babel/traverse/lib/visitors.js:193:21) at NodePath._call (/home/manish/Desktop/Practice/donut/node_modules/@babel/traverse/lib/path/context.js:53:20) at NodePath.call (/home/manish/Desktop/Practice/donut/node_modules/@babel/traverse/lib/path/context.js:40:17) at NodePath.visit (/home/manish/Desktop/Practice/donut/node_modules/@babel/traverse/lib/path/context.js:88:12) at TraversalContext.visitQueue (/home/manish/Desktop/Practice/donut/node_modules/@babel/traverse/lib/context.js:118:16) BUNDLE [android, dev] ./index.android.js ░░░░░░░░░░░░░░░░ 0.0% (0/3)::ffff:127.0.0.1 - - [01/Oct/2018:05:31:17 +0000] "GET /index.android.delta?platform=android&dev=true&minify=false HTTP/1.1" 500 - "-" "okhttp/3.10.0" BUNDLE [android, dev] ./index.android.js ░░░░░░░░░░░░░░░░ 0.0% (0/3), failed.

似乎错误是由于 babel 引起的。但无法获得解决方案。这个问题的解决方案是什么？

Answer 1

我在依赖项中使用 babel-preset-react-native，但现在已弃用 "metro-react-native-babel-preset": "^0.47.0"。所以，我在 .babelrc 文件中更新了它，并添加了以下行:

{
  "presets": ["module:metro-react-native-babel-preset"]
}

上面的代码解决了这个问题。