var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
export function create(initialState) {
    var state = initialState;
    var listeners = [];
    function setState(partial) {
        state = __assign(__assign({}, state), partial);
        for (var i = 0; i < listeners.length; i++) {
            listeners[i]();
        }
    }
    function getState() {
        return state;
    }
    function subscribe(listener) {
        listeners.push(listener);
        return function unsubscribe() {
            var index = listeners.indexOf(listener);
            listeners.splice(index, 1);
        };
    }
    return {
        setState: setState,
        getState: getState,
        subscribe: subscribe,
    };
}