Found a bug, looks like transpiled static methods no longer have a self parameter.

class Player {
    static initialize() {
        this.x = 0;     // this = Player
    }
}

Player.initialize();
console.log(Player.x);

When transpiled to Lua initialize turns into

function Player.initialize()
    self.x = 0;
end

So that function won't work, self will always be nil.

Transpile and run this code with tsc and node and you'll get an output of 0.

tsc main.ts && node main.js