The stack property is not removed from the Error object when includeStack equals false

Question

The stack property is not removed from the Error object when includeStack is equal to false:

"final:after": {
    "loopback#errorHandler": {
        "params": {
            "includeStack": false
        }
    }
}

Even with disableStackTrace equal to true in config.json:

"errorHandler": {
    "disableStackTrace": true
}

What I’m doing wrong?

The errorHandler only serves for 404 errors?

Answer 1

Setting errors in Loopback is done through 2 files: config.json and middleware.json.

Adding the stack (detailed error description) to Loopback works as follows:

The archive server/config.json:

1. For type 500 errors only.
2. Works only if the environment variable NODE_ENV is different from "Production", since for production the stack is removed (which makes perfect sense).
3. To disable the stack in other environments, simply edit the property errorHandler:

"errorHandler": {
    "disableStackTrace": true
}

The archive server/middleware.json for other types of errors:

1. Deactivates/Activates in any environment, including the production environment since they are not deactivated automatically as with type 500 errors.
2. To disable errors, simply add the following property:

"final:after": {
    "loopback#errorHandler": {
        "params": {
            "includeStack": false
        }
    }
}

To separate the settings of each environment, just create the files with the name of the respective environment, for example, a project with 2 environments: Design and Production.

Just create the middleware.production.json and config.production.json when the environment variable NODE_ENV is equal to production, Loopback will automatically load the correct settings file.