import type { PrototypeStruct } from '../index.js';
interface IsSubset<T> {
    isSubset(other: Set<T>): boolean;
}
export declare const isSubset: PrototypeStruct;
declare global {
    interface Set<T> extends IsSubset<T> {
    }
}
export {};
//# sourceMappingURL=is-subset.d.ts.map