从react-native运行应用程序时，我在模拟器/设备上收到以下错误消息。
** ERROR **
The development server returned response error code: 500
URL: http: //10.0.2.2:8081/index.delta?platform=android&dev=true&minify=false
Body: {
"type": "TransformError",
"lineNumber": 0,
"errors": [{
"description": "/Users/admin/Documents/PULSE/Phase II/Projects/pulse-mobile-common-rn/App.js: Cannot read property 'bindings' of null",
"lineNumber": 0
}],
"name": "SyntaxError",
"message": "/Users/admin/Documents/PULSE/Phase II/Projects/pulse-mobile-common-rn/App.js: Cannot read property 'bindings' of null",
"stack": "TypeError: Cannot read property 'bindings' of null\n at Scope.moveBindingTo (/Users/admin/Documents/PULSE/Phase II/Projects/pulse-mobile-common-rn/node_modules/@babel/traverse/lib/scope/index.js:867:13)\n at BlockScoping.updateScopeInfo (/Users/admin/Documents/PULSE/Phase II/Projects/pulse-mobile-common-rn/node_modules/babel-plugin-transform-es2015-block-scoping/lib/index.js:364:17)\n at BlockScoping.run (/Users/admin/Documents/PULSE/Phase II/Projects/pulse-mobile-common-rn/node_modules/babel-plugin-transform-es2015-block-scoping/lib/index.js:330:12)\n at PluginPass.BlockStatementSwitchStatementProgram (/Users/admin/Documents/PULSE/Phase II/Projects/pulse-mobile-common-rn/node_modules/babel-plugin-transform-es2015-block-scoping/lib/index.js:70:24)\n at newFn (/Users/admin/Documents/PULSE/Phase II/Projects/pulse-mobile-common-rn/node_modules/@babel/traverse/lib/visitors.js:193:21)\n at NodePath._call (/Users/admin/Documents/PULSE/Phase II/Projects/pulse-mobile-common-rn/node_modules/@babel/traverse/lib/path/context.js:53:20)\n at NodePath.call …我有一个 rar 文件，它是文件的集合。我已经使用 python 代码在 rar 文件上生成了 MD5 校验和，如下所示，然后假设 rar 文件生成的 md5 是 XXX。当我刚刚提取 rar 文件（没有修改/添加文件）并再次创建 rar 文件时，我观察到校验和已更改（除 XXX 之外）。
import hashlib
hashlib.md5("filename.rar").hexdigest()
有没有像 CRC、校验和、SHA1 等算法，即使文件日期/时间发生变化并且文件的实际内容没有变化，计算出的校验和仍然相同？
babeljs ×1
checksum ×1
crc ×1
javascript ×1
md5 ×1
node.js ×1
python ×1
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sha1 ×1