export declare function includes<T>(needleOrNeedles: T | T[], haystack: T[]): boolean;
declare const _default: abstract new <T>() => import("@ember/component/helper").FunctionBasedHelperInstance<{
    Args: {
        Positional: [T | T[], T[]];
        Named: object;
    };
    Return: boolean;
}>;
export default _default;
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