>
> The "instanceof" guard is sadly necessary, since there's no way to specify
> that a function may
> *only* be called as a constructor in JS, and calling it without new
> will then pollute the global namespace,
"use strict"
function SomeConstructor(params) {
this.pollute = params
}
Just use use strictmode so that your constructor throws an error if it's
called without new
The instanceof check is considered friendly for the purpose of your API
being agnostic of `var o = SomeConstructor(...)` and `var o = new
SomeConstructor(...)`
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