ahooks/es/useRequest/src/utils/cancelledError.js

react hooks library

var _a;
const CANCELLED_ERROR_FLAG = '__AHOOKS_CANCELLED_ERROR__';
/**
 * Rejection reason used when `useRequest` ignores a request, either because
 * `cancel()` was called (or the component unmounted), or because a newer call superseded it.
 *
 * It is swallowed by `run`/`refresh`, by `options.onError` and by the plugin `onError`
 * handlers, so it only surfaces to code that awaits `runAsync`/`refreshAsync` directly.
 */
export class CancelledError extends Error {
    constructor(message = 'useRequest: the request was cancelled or superseded.') {
        super(message);
        /** Marker that survives duplicated copies of the module, unlike `instanceof`. */
        this[_a] = true;
        this.name = 'CancelledError';
        // keep `instanceof` working when the class is downleveled
        Object.setPrototypeOf(this, CancelledError.prototype);
    }
}
_a = CANCELLED_ERROR_FLAG;
export function isCancelledError(error) {
    return (error instanceof CancelledError ||
        (typeof error === 'object' &&
            error !== null &&
            error[CANCELLED_ERROR_FLAG] === true));
}
export function cancelPendingPromise(pendingRejectRef) {
    var _b;
    (_b = pendingRejectRef.current) === null || _b === void 0 ? void 0 : _b.call(pendingRejectRef, new CancelledError());
    pendingRejectRef.current = undefined;
}