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// @ts-check
/** * A deferrable promise that can be externally resolved or rejected. * @template [Resolves=void] What the promise resolves. */export default class Defer {  constructor() {    /** The promise. */    this.promise = /** @type {Promise<Resolves>} */ (      new Promise((resolve, reject) => {        /** Resolves the promise. */        this.resolve = resolve;
        /** Rejects the promise. */        this.reject = reject;      })    );  }}