@okta/okta-auth-js/esm/browser/util/PromiseQueue.js

The Okta Auth SDK

/*!
 * Copyright (c) 2015-present, Okta, Inc. and/or its affiliates. All rights reserved.
 * The Okta software accompanied by this notice is provided pursuant to the Apache License, Version 2.0 (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.
 */

import { isPromise } from './types.js';
import { warn } from './console.js';

class PromiseQueue {
    constructor(options = { quiet: false }) {
        this.queue = [];
        this.running = false;
        this.options = options;
    }
    push(method, thisObject, ...args) {
        return new Promise((resolve, reject) => {
            if (this.queue.length > 0) {
                if (this.options.quiet !== false) {
                    warn('Async method is being called but another async method is already running. ' +
                        'The new method will be delayed until the previous method completes.');
                }
            }
            this.queue.push({
                method,
                thisObject,
                args,
                resolve,
                reject
            });
            this.run();
        });
    }
    run() {
        if (this.running) {
            return;
        }
        if (this.queue.length === 0) {
            return;
        }
        this.running = true;
        var queueItem = this.queue.shift();
        var res = queueItem.method.apply(queueItem.thisObject, queueItem.args);
        if (isPromise(res)) {
            res.then(queueItem.resolve, queueItem.reject).finally(() => {
                this.running = false;
                this.run();
            });
        }
        else {
            queueItem.resolve(res);
            this.running = false;
            this.run();
        }
    }
}

export { PromiseQueue };
//# sourceMappingURL=PromiseQueue.js.map