export interface IsEqualOptions {
    compare?: (a: any, b: any, key?: string | symbol) => boolean | undefined;
    keysToIgnore?: Set<string | symbol> | string[];
    mustBeSameClass?: boolean;
}
export declare function processMillis(): number;
export declare function sleep(ms: number): Promise<void>;
export declare enum DateTimeOptions {
    DATE_ONLY = 0,
    NO_SECONDS = 1,
    NO_ZONE = 2,
    TIME_ONLY = 3,
    UTC = 4,
    USE_T = 5,
    USE_Z = 6,
    WITH_MILLIS = 7
}
export declare function formatDateTime(options?: DateTimeOptions[]): string;
export declare function formatDateTime(date: Date | number | string, ...options: DateTimeOptions[]): string;
export declare function formatDateTime(date: Date | number | string, options?: DateTimeOptions[]): string;
export declare function numSort(a: any, b: any): number;
export declare function reverseNumSort(a: any, b: any): number;
export declare function toDefaultLocaleFixed(n: number, minFracDigits?: number, maxFracDigits?: number): string;
export declare function toBoolean(value: any, defaultValue?: boolean, forHtmlAttribute?: boolean): boolean;
export declare function toBoolean(value: any, defaultValue: null, forHtmlAttribute?: boolean): boolean | null;
export declare function toInt(value: any, defaultValue?: number, radix?: number): number;
export declare function toInt(value: any, defaultValue: null, radix?: number): number | null;
export declare function toValidInt(value: any, defaultValue?: number, radix?: number): number;
export declare function toNumber(value: any, defaultValue?: number): number;
export declare function toNumber(value: any, defaultValue: null): number | null;
export declare function toValidNumber(value: any, defaultValue?: number): number;
export declare function first<T>(array: ArrayLike<T> | null | undefined, defaultValue?: T): T | undefined;
export declare function nth<T>(array: ArrayLike<T> | null | undefined, n: number, defaultValue?: T): T | undefined;
export declare function last<T>(array: ArrayLike<T> | null | undefined, defaultValue?: T): T | undefined;
export declare function push<T>(array: T[] | null | undefined, ...items: any[]): T[];
export declare function pushIf<T>(condition: boolean, array: T[] | null | undefined, ...items: any[]): T[];
export declare function forEach<T>(obj: Record<string, T> | null | undefined, callback: (key: string, value: T) => void): void;
export declare function forEach2<T>(obj: Record<string | symbol, T> | null | undefined, callback: (key: string | symbol, value: T) => void): void;
export declare function isArray(a: unknown): a is any[];
export declare function nfe<T>(array: T[]): T[] | null;
export declare function ufe<T>(array: T[]): T[] | undefined;
export declare function getOrSet<T, U>(map: Map<T, U>, key: T, callbackOrValue: U | (() => U)): U;
export declare function getOrSetAsync<T, U>(map: Map<T, U>, key: T, callback: () => Promise<U>): Promise<U>;
export declare function isArrayLike(a: unknown): a is ArrayLike<any>;
export declare function isBigint(a: unknown): a is bigint;
export declare function isBoolean(a: unknown): a is boolean;
export declare function isFunction(a: unknown): a is Function;
export declare function isNonFunctionObject(a: unknown): a is Exclude<Record<string | symbol, any>, Function>;
export declare function isNumber(a: unknown): a is number;
export declare function isObject(a: unknown): a is Record<string | symbol, any>;
export declare function isString(a: unknown): a is string;
export declare function isSymbol(a: unknown): a is symbol;
export declare function classOf(a: unknown, noClassResult?: boolean): string | null;
export declare function clone<T>(orig: T, shallow?: boolean | Set<any> | ((value: any, depth: number) => boolean)): T;
export declare function isEqual(a: any, b: any, options?: boolean | IsEqualOptions, key?: string | symbol): boolean;
export declare function flatten(a: any[]): any[];
export declare function flattenDeep(a: any[]): any[];
export type EntrySorter = (a: [string | symbol, any], b: [string | symbol, any]) => number;
export declare function sortObjectEntries<T>(obj: T, inPlace?: boolean): T;
export declare function sortObjectEntries<T>(obj: T, sorter?: EntrySorter, inPlace?: boolean): T;
export declare const noop: (..._args: any[]) => void;
export declare const repeat: (n: number, f: (n?: number) => any) => void;
export declare function isValidJson(s: string): boolean;
export declare function keyCount(obj: any): number;
export declare function regex(main: TemplateStringsArray, flags?: string): RegExp;
export declare function compareDottedValues(a: string, b: string): number;
export type TbuAnyFunction = (...args: any[]) => any;
export declare function debounce<F extends TbuAnyFunction>(delay: number, func: F, callback?: (result: ReturnType<F>) => void): ((...args: Parameters<F>) => void) & {
    cancel: () => void;
};
export declare function throttle<F extends TbuAnyFunction>(delay: number, func: F, callback?: (result: ReturnType<F>) => void): ((...args: Parameters<F>) => void) & {
    cancel: () => void;
};
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