@anthropic-ai/sdk/internal/utils/abort.js

The official TypeScript library for the Anthropic API

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.linkAbort = linkAbort;
/**
 * Chain an external {@link AbortSignal} into a local {@link AbortController}:
 * the controller aborts whenever `external` aborts (synchronously if it is
 * already aborted).
 *
 * Returns a cleanup function that detaches the listener. Callers MUST invoke it
 * on their normal teardown path — `{ once: true }` only removes the listener if
 * abort actually fires, so a long-lived `external` signal (e.g. a daemon-wide
 * signal reused across many short-lived controllers) would otherwise leak one
 * listener per controller.
 */
function linkAbort(external, controller) {
    if (!external)
        return () => { };
    if (external.aborted) {
        controller.abort();
        return () => { };
    }
    const onAbort = () => controller.abort();
    external.addEventListener('abort', onAbort);
    return () => external.removeEventListener('abort', onAbort);
}
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