manejador de error predeterminado Express
app.use((err, req, res, next) => {
const defaultErr = {
log: 'Express error handler caught unknown middleware error',
status: 500,
message: { err: 'An error occurred' },
};
const errorObj = Object.assign({}, defaultErr, err);
console.log(errorObj.log);
return res.status(errorObj.status).json(errorObj.message);
});
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