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　　1、Debug模式下会报如下错误：

　　错误：Invariant Violation:Calling synchronous methods on native modules is not supported in Chrome.

　　Consider providing alternative methods to expose this method in debug mode.e.g.bu exposing constants ahead-of-time.

　　解决：Debug模式下，注释以下代码：

import { Client } from 'rollbar-react-native';
const rollbar = new Client('6628ae4**********575f8e2f267');