react native项目运行报错
Unhandled JS Exception: Unexpected identifier ‘_classCallCheck’. import call expects exactly one argument. no stack

解决办法
1.升级 metro-react-native-babel-preset 版本 为0.59.0
2.修改babel.config.js 生效
之前：

module.exports = {
        presets: ['module:metro-react-native-babel-preset'],
    };

修改后：

module.exports = {
       presets: [['module:metro-react-native-babel-preset', {
            unstable_disableES6Transforms: true
        }]],
    };

然后重新运行项目即可