race-cancellation/dist/cancellablePromise.js

Utilities for using Promise.race([task, cancellation]) for async/await code.

import noopRaceCancel from "./noopRaceCancel.js";
/**
 * Creates a cancellable Promise from an executor that returns a {@link DisposeFn} function and a {@link RaceCancelFn} function.
 *
 * @param disposableExecutor - a {@link DisposableExecutorFn} function (this will not be run if already cancelled).
 * @param raceCancel - a {@link RaceCancelFn} function to race against the disposable promise against.
 * @public
 */
export default async function cancellablePromise(disposableExecutor, raceCancel = noopRaceCancel) {
    let dispose;
    let result;
    try {
        result = await raceCancel(() => new Promise((resolve, reject) => {
            dispose = disposableExecutor(resolve, reject);
        }));
    }
    finally {
        if (dispose !== undefined) {
            dispose();
        }
    }
    return result;
}
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