Method isSupersetOf

src/lualib/Set.ts:232–239

* @returns a boolean indicating whether all the elements in the argument are also in this Set.

(other: ReadonlySet<unknown>)

     * @returns a boolean indicating whether all the elements in the argument are also in this Set.
     */
    public isSupersetOf(other: ReadonlySet<unknown>): boolean {
        for (const item of other) {
            if (!this.has(item as T)) {
                return false;
            }
        }
        return true;
    }

    /**
     * @returns a boolean indicating whether this Set has no elements in common with the argument.