ember-concurrency/dist/-private/external/scheduler/policies/restartable-policy.js

Improved concurrency/async primitives for Ember.js

import BoundedPolicy from './bounded-policy.js';
import { STARTED, makeCancelState } from './execution-states.js';

const CANCELLED = makeCancelState(`it belongs to a 'restartable' Task that was .perform()ed again`);
class RestartableReducer {
  constructor(numToCancel) {
    this.numToCancel = numToCancel;
  }
  step() {
    if (this.numToCancel > 0) {
      this.numToCancel--;
      return CANCELLED;
    } else {
      return STARTED;
    }
  }
}
class RestartablePolicy extends BoundedPolicy {
  makeReducer(numRunning, numQueued) {
    return new RestartableReducer(numRunning + numQueued - this.maxConcurrency);
  }
}

export { RestartablePolicy as default };
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