Anything to anything map using events

gistfile1.js

function assign(key, value) {
    eve.on("{}↔︎{}", function (f) {
        if (this == key) {
            eve.stop();
            f(value);
        }
    });
}
function get(o) {
    var res;
    eve("{}↔︎{}", o, function (o2) {
        res = o2;
    });
    return res;
}


var a = {},
    b = {};
assign(a, b);
assign(b, 1);
assign("key", "value");
console.log(get(a) == b); //true
console.log(get(b) == b); //false
console.log(get(b) == 1); //true
console.log(get("key") == "value"); //true