For tutorial: Create an abortable API using AbortController and AbortSignal

abortableSearchItems_after.ts

const abortableSearchItems = (
    searchString: string,
    signal: AbortSignal
): Promise<Item[]> => {
    if (signal.aborted) {
        return Promise.reject(new Error("searchAborted"));
    }

    return new Promise((resolve, reject) => {
        const abortSearchHandler = () => {
            reject(new Error("searchAborted"));
        };

        searchItemsAPI(searchString)
            .then((results) => resolve(results))
            .catch((error) => reject(error))
            .finally(() => {
                signal.removeEventListener("abort", abortSearchHandler);
            });

        signal.addEventListener("abort", abortSearchHandler);
    });
};