json-joy/esm/util/Defer.js

Collection of libraries for building collaborative editing apps.

/**
 * An externally resolvable/rejectable "promise". Use it to resolve/reject
 * promise at any time.
 *
 * ```ts
 * const future = new Defer();
 *
 * future.promise.then(value => console.log(value));
 *
 * future.resolve(123);
 * ```
 */
export class Defer {
    resolve;
    reject;
    promise = new Promise((resolve, reject) => {
        this.resolve = resolve;
        this.reject = reject;
    });
}