/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

function id<T>(v: Object): T {
    return v as T
}

function main() {
    let s = id<"a"|"b"|"c">("d")
    if (s == "d") {
        console.log(s)
    }
}

/* @@? 22:9 Error TypeError: Operator '==' cannot be applied to types '"a"|"b"|"c"' and '"d"'. */