React Native: Unexpected token ‘:‘. Expected a ‘)‘ or a ‘,‘ after a parameter declaration

一，现象

模拟器报错：
React Native: Unexpected token ‘:’. Expected a ‘)’ or a ‘,’ after a parameter declaration

二，解决办法

这里写的很清楚
https://github.com/babel/babel/issues/14139

I have the same problem. This is caused by #14105.Because of https://github.com/facebook/metro/blob/v0.58.0/packages/metro-react-native-babel-preset/src/transforms/transform-symbol-member.js#L52 will transform Symbol.iterator, but the change of #14105 will cause transform is break, finally the rest flow grammar is reserved.Please update metro-react-native-babel-preset from 0.58.0 to 0.59.0 to resolve it.If it doesn't take effect, please try yarn start --reset-cache to restart app.And other two solutions: (only use one of)use resolutions of yarn to lock @babel/traverse to 7.16.7 (https://classic.yarnpkg.com/lang/en/docs/selective-version-resolutions/#toc-how-to-use-it) and run yarn to reinstall, finally run yarn start --reset-cache to restart app.
update babel.config.js of your project : (assume your metro-react-native-babel-preset is 0.58.0)
from:module.exports = {presets: ['module:metro-react-native-babel-preset'],};
to:module.exports = {presets: [['module:metro-react-native-babel-preset', {unstable_disableES6Transforms: true}]],};
finally run yarn start --reset-cache to restart app.

主要是因为：

"metro-react-native-babel-preset": "^0.58.0",

我采用的是修改babel.config.js的方法，亲测可行

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React Native: Unexpected token ‘:‘. Expected a ‘)‘ or a ‘,‘ after a parameter declaration

一，现象

二，解决办法

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