Before, an options object containing properties and values to be used
was how decorated instances of the class would be created. This meant
the constructor could assign anything you feel like to `this`. Rather
than that, the constructor now assigns a strict set of values, and
methods are redefined in subclasses.
Basic unit tests were added to test if they could be written for after
the final refactor to fix the other memory leak here.
Now that nodejs/node#3072 is mostly fixed, we can finally start using
Node 4+ features.
This refactor:
- uses arrow functions where appropriate
Note that arrow functions still aren't used in Mocha, where `this`
is sometimes meaningful.
This also removes the need for .bind() nearly everywhere, as well
as the `self = this` trick.
- refactors Validator and Connection into ES6 classes
- no longer uses Array#forEach for iterating arrays
We strongly prefer for (let i = 0; i < arr.length; i++) because of
performance reasons. Most forEaches have been replaced with for..of,
though, which is 5x slower than the long-form loop but 2x faster
than forEach, which is good enough outside of most inner loops.
The only exception is tournaments, which is due for a more invasive
refactor soon anyway.
I used a hack to make the multiple declaration errors go away,
so all that remained in jsHint were actual errors, which I've
now mostly fixed.
All this linting ended up uncovering one actual bug: Uproar's
message not showing. It's a very minor bug in a move no one uses,
so I'm going to fold it into this commit.
