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Author SHA1 Message Date
JiaLiPassion 8456c5ec60 feat(zone.js): add a zone config to allow user disable wrapping uncaught promise rejection (#35873)
Close #27840.

By default, `zone.js` wrap uncaught promise error and wrap it to a new Error object with some
additional information includes the value of the error and the stack trace.

Consider the following example:

```
Zone.current
  .fork({
    name: 'promise-error',
    onHandleError: (delegate: ZoneDelegate, current: Zone, target: Zone, error: any): boolean => {
      console.log('caught an error', error);
      delegate.handleError(target, error);
      return false;
    }
}).run(() => {
  const originalError = new Error('testError');
  Promise.reject(originalError);
});
```

The `promise-error` zone catches a wrapped `Error` object whose `rejection` property equals
to the original error, and the message will be `Uncaught (in promise): testError....`,
You can disable this wrapping behavior by defining a global configuraiton
`__zone_symbol__DISABLE_WRAPPING_UNCAUGHT_PROMISE_REJECTION = true;` before importing `zone.js`.

PR Close #35873
2020-03-16 09:00:10 -07:00