"use strict";
var root_1 = require('../util/root');
var Symbol = root_1.root.Symbol;
if (typeof Symbol === 'function') {
    if (Symbol.observable) {
        exports.$$observable = Symbol.observable;
    }
    else {
        if (typeof Symbol.for === 'function') {
            exports.$$observable = Symbol.for('observable');
        }
        else {
            exports.$$observable = Symbol('observable');
        }
        Symbol.observable = exports.$$observable;
    }
}
else {
    exports.$$observable = '@@observable';
}
//# sourceMappingURL=observable.js.map