export declare function findElement<T, K>(input: T[], attribute: string, value: K): T | string;
export declare function sortBy<T, K>(input: T[], ...fields: any[]): (number | T | (() => ArrayIterator<T>) | {
    [x: number]: boolean | undefined;
    length?: boolean | undefined;
    toString?: boolean | undefined;
    toLocaleString?: boolean | undefined;
    pop?: boolean | undefined;
    push?: boolean | undefined;
    concat?: boolean | undefined;
    join?: boolean | undefined;
    reverse?: boolean | undefined;
    shift?: boolean | undefined;
    slice?: boolean | undefined;
    sort?: boolean | undefined;
    splice?: boolean | undefined;
    unshift?: boolean | undefined;
    indexOf?: boolean | undefined;
    lastIndexOf?: boolean | undefined;
    every?: boolean | undefined;
    some?: boolean | undefined;
    forEach?: boolean | undefined;
    map?: boolean | undefined;
    filter?: boolean | undefined;
    reduce?: boolean | undefined;
    reduceRight?: boolean | undefined;
    find?: boolean | undefined;
    findIndex?: boolean | undefined;
    fill?: boolean | undefined;
    copyWithin?: boolean | undefined;
    entries?: boolean | undefined;
    keys?: boolean | undefined;
    values?: boolean | undefined;
    includes?: boolean | undefined;
    flatMap?: boolean | undefined;
    flat?: boolean | undefined;
    [Symbol.iterator]?: boolean | undefined;
    readonly [Symbol.unscopables]?: boolean | undefined;
} | (() => string) | {
    (...items: ConcatArray<T>[]): T[];
    (...items: (T | ConcatArray<T>)[]): T[];
} | ((searchElement: T, fromIndex?: number) => number) | ((searchElement: T, fromIndex?: number) => number) | ((start?: number, end?: number) => T[]) | ((searchElement: T, fromIndex?: number) => boolean) | {
    (): string;
    (locales: string | string[], options?: Intl.NumberFormatOptions & Intl.DateTimeFormatOptions): string;
} | ((separator?: string) => string) | {
    <S extends T>(predicate: (value: T, index: number, array: T[]) => value is S, thisArg?: any): this is S[];
    (predicate: (value: T, index: number, array: T[]) => unknown, thisArg?: any): boolean;
} | ((predicate: (value: T, index: number, array: T[]) => unknown, thisArg?: any) => boolean) | ((callbackfn: (value: T, index: number, array: T[]) => void, thisArg?: any) => void) | (<U>(callbackfn: (value: T, index: number, array: T[]) => U, thisArg?: any) => U[]) | {
    <S extends T>(predicate: (value: T, index: number, array: T[]) => value is S, thisArg?: any): S[];
    (predicate: (value: T, index: number, array: T[]) => unknown, thisArg?: any): T[];
} | {
    (callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T;
    (callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T;
    <U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U;
} | {
    (callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T): T;
    (callbackfn: (previousValue: T, currentValue: T, currentIndex: number, array: T[]) => T, initialValue: T): T;
    <U>(callbackfn: (previousValue: U, currentValue: T, currentIndex: number, array: T[]) => U, initialValue: U): U;
} | {
    <S extends T>(predicate: (value: T, index: number, obj: T[]) => value is S, thisArg?: any): S | undefined;
    (predicate: (value: T, index: number, obj: T[]) => unknown, thisArg?: any): T | undefined;
} | ((predicate: (value: T, index: number, obj: T[]) => unknown, thisArg?: any) => number) | (() => ArrayIterator<[number, T]>) | (() => ArrayIterator<number>) | (() => ArrayIterator<T>) | (<U, This = undefined>(callback: (this: This, value: T, index: number, array: T[]) => U | readonly U[], thisArg?: This | undefined) => U[]) | (<A, D extends number = 1>(this: A, depth?: D | undefined) => FlatArray<A, D>[]) | (() => T | undefined) | ((...items: T[]) => number) | (() => T[]) | (() => T | undefined) | ((compareFn?: ((a: T, b: T) => number) | undefined) => T[]) | {
    (start: number, deleteCount?: number): T[];
    (start: number, deleteCount: number, ...items: T[]): T[];
} | ((...items: T[]) => number) | ((value: T, start?: number, end?: number) => T[]) | ((target: number, start: number, end?: number) => T[]))[];
export declare function where<T>(input: T[], query: any): T[];