rxjs/dist/esm/internal/scheduler/AsyncScheduler.js

Reactive Extensions for modern JavaScript

import { Scheduler } from '../Scheduler';
export class AsyncScheduler extends Scheduler {
    constructor(SchedulerAction, now = Scheduler.now) {
        super(SchedulerAction, now);
        this.actions = [];
        this.active = false;
        this.scheduled = undefined;
    }
    flush(action) {
        const { actions } = this;
        if (this.active) {
            actions.push(action);
            return;
        }
        let error;
        this.active = true;
        do {
            if (error = action.execute(action.state, action.delay)) {
                break;
            }
        } while (action = actions.shift());
        this.active = false;
        if (error) {
            while (action = actions.shift()) {
                action.unsubscribe();
            }
            throw error;
        }
    }
}
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