function ownKeys(e, r) {
    var t = Object.keys(e);
    if (Object.getOwnPropertySymbols) {
        var o = Object.getOwnPropertySymbols(e);
        r &&
            (o = o.filter(function (r) {
                return Object.getOwnPropertyDescriptor(e, r).enumerable;
            })),
            t.push.apply(t, o);
    }
    return t;
}
function _objectSpread(e) {
    for (var r = 1; r < arguments.length; r++) {
        var t = null != arguments[r] ? arguments[r] : {};
        r % 2
            ? ownKeys(Object(t), !0).forEach(function (r) {
                _defineProperty(e, r, t[r]);
            })
            : Object.getOwnPropertyDescriptors
                ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t))
                : ownKeys(Object(t)).forEach(function (r) {
                    Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r));
                });
    }
    return e;
}
function _defineProperty(obj, key, value) {
    key = _toPropertyKey(key);
    if (key in obj) {
        Object.defineProperty(obj, key, {
            value: value,
            enumerable: true,
            configurable: true,
            writable: true,
        });
    }
    else {
        obj[key] = value;
    }
    return obj;
}
function _toPropertyKey(t) {
    var i = _toPrimitive(t, 'string');
    return 'symbol' == typeof i ? i : i + '';
}
function _toPrimitive(t, r) {
    if ('object' != typeof t || !t)
        return t;
    var e = t[Symbol.toPrimitive];
    if (void 0 !== e) {
        var i = e.call(t, r || 'default');
        if ('object' != typeof i)
            return i;
        throw new TypeError('@@toPrimitive must return a primitive value.');
    }
    return ('string' === r ? String : Number)(t);
}
export function upgradeCsl(item) {
    if (Array.isArray(item)) {
        return item.map(upgradeCsl);
    }
    item = _objectSpread({}, item);
    if ('event' in item) {
        item['event-title'] = item.event;
        delete item.event;
    }
    if (item.type === 'book' && 'version' in item) {
        item.type = 'software';
    }
    return item;
}
export function downgradeCsl(item) {
    if (Array.isArray(item)) {
        return item.map(downgradeCsl);
    }
    item = _objectSpread({}, item);
    if ('event-title' in item) {
        item.event = item['event-title'];
        delete item['event-title'];
    }
    if (item.type === 'software') {
        item.type = 'book';
    }
    return item;
}
