countup.js

constructor(
    target: string | HTMLElement | HTMLInputElement,
    endVal?: number,
    options?: CountUpOptions
);

count: (timestamp: number) => void;

duration: number;

easeOutExpo: (t: number, b: number, c: number, d: number) => number;

easingFn?: (t: number, b: number, c: number, d: number) => number;

el: HTMLElement | HTMLInputElement;

error: string;

formatNumber: (num: number) => string;

formattingFn: (num: number) => string;

frameVal: number;

once: boolean;

options?: CountUpOptions;

paused: boolean;

startVal: number;

version: string;

ensureNumber: (n: any) => boolean;

handleScroll: (self: CountUp) => void;

parse: (number: string) => number;

pauseResume: () => void;

printValue: (val: number) => void;

reset: () => void;

start: (callback?: (args?: any) => any) => void;

update: (newEndVal: string | number) => void;

validateValue: (value: string | number) => number;

decimal?: string;

decimalPlaces?: number;

duration?: number;

easingFn?: (t: number, b: number, c: number, d: number) => number;

enableScrollSpy?: boolean;

formattingFn?: (n: number) => string;

numerals?: string[];

onCompleteCallback?: () => any;

onStartCallback?: () => any;

plugin?: CountUpPlugin;

prefix?: string;

scrollSpyDelay?: number;

scrollSpyOnce?: boolean;

separator?: string;

smartEasingAmount?: number;

smartEasingThreshold?: number;

startVal?: number;

suffix?: string;

useEasing?: boolean;

useGrouping?: boolean;

useIndianSeparators?: boolean;

render: (elem: HTMLElement, formatted: string) => void;