xdl@42.0.0" has unmet peer dependency "react@16.0.0-alpha.12 solution

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over  flow 查找到这个问题，大概就是....

I'm using npm install react-native@0.40.0 --save to upgrade React Native, but I keep getting an error that I have an "UNMET PEER DEPENDENCY react-native@0.40.0".

This confuses me because I thought I had just installed react-native@0.40.0.

 

Those error messages can be really poorly worded. I've seen this same thing; it's reporting that you have react-native@0.40.0 installed, but something else is requesting a different version.

I'd suggest doing an npm ls; it will give you a better picture of all the peer dependency requirements and what's wrong.

 

Thanks, I've tried npm ls, and it appears that I have two conflicting requirements: one for react-native@^0.33.0 and another for react-native@>=0.40. Is there any way this can be resolved? – user2421192 Jan 8 at 6:58

Ouch. Unfortunately, I don't think you have a good way to resolve that short of finding dependencies that have compatible react-native dependencies. – Jacob Jan 8 at 6:59

 

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