export declare const equal: (a: any, b: any) => boolean;
export declare const prop: (o: Record<string, any>, prop: string) => any;
export declare const find: <E>(list: E[], filterFn: (el: E, i: number) => boolean) => E;
export declare const findByProp: <E>(list: E[], property: string, value: any) => E;
export declare const prettyJSON: (a: any) => string;
export declare const readJSON: (path: string) => any;
type Convert<UI> = {
    toUserInput: (input: string) => UI;
};
export declare const makeInputValidator: <UI>(convert: Convert<UI>) => (input: UI) => Promise<boolean>;
export declare const getArrayValues: (flagInput: any, expectedLength: any, fill: any) => any;
export {};
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