Today I Learned

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Show where `UnhandledPromiseRejection`s are at

Cleaning up a test suite and getting a lot of cryptic UnhandledPromiseRejectionWarning:s? Well then this little snippet can save you some time:

process.on('unhandledRejection', (reason, p) => {
  console.log('Unhandled rejection at: Promise', p, 'reason:', reason);
});

Credit where credit is due

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