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SubscriptionHandle.js
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SubscriptionHandle.js
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/*-
*
* Hedera JavaScript SDK
*
* Copyright (C) 2020 - 2023 Hedera Hashgraph, LLC
*
* 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.
*
*/
export default class SubscriptionHandle {
constructor() {
/** @type {{(): void} | null} */
this._call = null;
}
/**
* @param {() => void} call
* @returns {void}
*/
_setCall(call) {
this._call = call;
}
unsubscribe() {
if (this._call != null) {
this._call();
}
}
}