Extending Error

[alien-2-dev]

When extending the Error, and passing it to Bunyan, the new properties are not logged,

Extending Error

class FooError extends Error {

  constructor(message, newPropertyValue) {
    super();
    
    this.message = message;
    this.newProperty = newPropertyValue;
}

When logging

var logger = bunyan.createLogger({name: "myapp"});

var fooError = new FooError("someMessage", "booValue");

logger.error(fooError);

The logs contain "message" as expected but does not include non-standard error properties like the newPropertyValue.

{"name":"myapp","hostname":"localhost.localdomain","pid":16767,"level":50,"err":{"message":"someMessage","name":"Error","stack":"Error: \n   someMessage at ... "},"msg":"someMessage","time":"2017-06-22T13:47:24.774Z","v":0}