/**
 * @deprecated
 * @see identity
 * @param item
 */
export declare const identityTrue: (item: any) => boolean;
export declare const identity: (item: any) => any;
export declare const negation: (item: any) => boolean;
export declare const sortBy: (prop: any) => (items: any) => any;
export declare const isActive: (item: any) => any;
export declare const uniqueId: (item: any, index: any, arr: any) => boolean;
export declare const by: (prop: string) => (...props: any[]) => (item: any) => boolean;
export declare const byId: (...props: any[]) => (item: any) => boolean;
export declare const byType: (...props: any[]) => (item: any) => boolean;
export declare const sum: (a: any, b: any) => any;
export declare const or: (a: any, b: any) => (item: any) => any;
export declare const and: (a: any, b: any) => (item: any) => any;
export declare const isUnique: (arr: any) => boolean;