Function dispatch

docs/app/js/sanddance-app.js:136532–136538

()

    value: ()=>{}
};
function dispatch() {
    for(var i = 0, n = arguments.length, _ = {}, t; i < n; ++i){
        if (!(t = arguments[i] + "") || t in _ || /[\s.]/.test(t)) throw new Error("illegal type: " + t);
        _[t] = [];
    }
    return new Dispatch(_);
}
function Dispatch(_) {
    this._ = _;
}