export declare const uniqueFn: typeof uniqueFilterFnGenerator;
type FilterFn<T> = (_v: T) => boolean;
export declare function uniqueFilterFnGenerator<T>(): FilterFn<T>;
export declare function uniqueFilterFnGenerator<T, U>(extractFn: (v: T) => U): FilterFn<T>;
export declare function unique<T>(src: T[]): T[];
export declare function clean<T extends object>(src: T): T;
export declare function padWidth(s: string, target: number): number;
export declare function pad(s: string, w: number): string;
export declare function padLeft(s: string, w: number): string;
export declare function width(s: string): number;
export {};
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