没有兑现的承诺没有捕获块（未处理的拒绝）

Question

I write project in VueJs Javascript and would like to see in the console messages, if any of my Promises are not fulfilled and do not have catch block.

I tried something like this

Promise.reject("error!");
window.addEventListener('unhandledrejection', event => {
  console.log('i am error')
});

but without success. Are there any other approach? Or how could I fix this one?

Answer 1

unhandledrejection is for the native Promises currently only implemented in Chrome. If you want to log those error also in other browser you would need to overwrite the native Promise with another implementation like bluebird:

 Promise.reject("error!"); window.addEventListener('unhandledrejection', event => { console.log('i am error') }); 

 <script src="https://cdnjs.cloudflare.com/ajax/libs/bluebird/3.5.1/bluebird.js"></script> 

You need to make sure that bluebird is loaded as the first script.

bluebird: Error management configuration