@ydbjs/abortable/dist/signals.js

Utilities for working with AbortController and AbortSignal in YDB operations.

export function linkSignals(...signals) {
    let ac = new AbortController();
    let activeSignals = signals.filter((s) => !!s);
    for (let signal of activeSignals) {
        if (signal.aborted) {
            ac.abort(signal.reason);
            return {
                signal: ac.signal,
                [Symbol.dispose]: () => { },
            };
        }
    }
    let onAbort = (e) => ac.abort(e.target.reason);
    for (let signal of activeSignals) {
        signal.addEventListener('abort', onAbort, { once: true });
    }
    return {
        signal: ac.signal,
        [Symbol.dispose]() {
            for (let signal of activeSignals) {
                signal.removeEventListener('abort', onAbort);
            }
            if (!ac.signal.aborted) {
                ac.abort();
            }
        },
    };
}
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