The following JavaScript code does something I didn’t expect. Why is the serialized output from JSON.stringify missing the new bar property? Answer because this property is not enumerable. By default, properties added using Object.defineProperty() are not writable, not enumerable, and not configurable. see documentation : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/defineProperty#description so you must do: This is similar for the length property upon arrays:
Tag: reflection
Why does mocha chai should not prove identity for `return this`, if I use Proxy:get in the constructor?
I want to write a class, that deals with undefined properties. I also want to return this to be able to chain methods to create a domain specific language (DSL). I return a Proxy from the constructor, to handle undefined properties. Now when testing the instance, it does happen, that return this does not prove to be identical with the
get name of input variable (like Function.name)
I have a Function in which I want to retrieve the name of the variable that was used to call the function. How can I do that? If variable was a Function, I could use variable.name. I am aware of this, but it will only return “variable”, not the name of the variable that was put into the function. As