# countingup > Counter Class for JavaScript Latest version **0.4.7** (published 2026-07-21) · UNLICENSED license · 0 weekly downloads ## Install ```sh npm install countingup pnpm add countingup yarn add countingup bun add countingup ``` ## Health **Score 65/100 (B)** — status: active. Positive: has types; no vulnerabilities; recently updated; high maintenance score; high quality score. Warnings: low downloads; no esm support; pre 1.0. ## Facts | | | |---|---| | Version | 0.4.7 | | Published | 2026-07-21 | | First published | 2023-01-11 | | Weekly downloads | 0 | | License | UNLICENSED | | TypeScript types | bundled | | Module format | CommonJS | | Dependencies | 21 | | Unpacked size | 17.3 KB | | Known vulnerabilities | 0 | | Install scripts | no | | GitHub stars | 1 | | Author | Samuel Fox J. | | Maintainers | tj-commits | | Keywords | math, js, utils, problems, calculations | ## Links - npm: https://www.npmjs.com/package/countingup - Repository: https://github.com/tj-commits/countingup - Homepage: https://github.com/tj-commits/countingup#readme - Issues: https://github.com/tj-commits/countingup/issues - npm.io page: https://npm.io/package/countingup ## Dependencies (21) - [const-e](https://npm.io/package/const-e.md) ^1.0.1 - [math.pi](https://npm.io/package/math.pi.md) ^1.0.0 - [const-ln2](https://npm.io/package/const-ln2.md) ^1.0.0 - [is-object](https://npm.io/package/is-object.md) ^1.0.2 - [const-ln10](https://npm.io/package/const-ln10.md) ^1.0.0 - [infinities](https://npm.io/package/infinities.md) ^1.0.1 - [is-integer](https://npm.io/package/is-integer.md) ^1.0.7 - [const-log2e](https://npm.io/package/const-log2e.md) ^1.0.0 - [const-log10e](https://npm.io/package/const-log10e.md) ^1.0.0 - [const-sqrt-half](https://npm.io/package/const-sqrt-half.md) ^1.0.0 - [immediate-error](https://npm.io/package/immediate-error.md) ^7.1.0 - [@std262/libnumbers](https://npm.io/package/@std262/libnumbers.md) ^1.0.1 - [primitive-value-nan](https://npm.io/package/primitive-value-nan.md) ^1.0.1 - [@is-(unknown)/is-nil](https://npm.io/package/@is-(unknown)/is-nil.md) ^1.2.0 - [@positive-numbers/one](https://npm.io/package/@positive-numbers/one.md) ^3.0.0 - [@positive-numbers/zero](https://npm.io/package/@positive-numbers/zero.md) ^3.0.0 - [es-logical-or-operator](https://npm.io/package/es-logical-or-operator.md) ^1.0.0 - [@is-(unknown)/is-finite](https://npm.io/package/@is-(unknown)/is-finite.md) ^1.0.0 - [es-logical-not-operator](https://npm.io/package/es-logical-not-operator.md) ^1.0.0 - [@stdlib/constants-float64-sqrt-two](https://npm.io/package/@stdlib/constants-float64-sqrt-two.md) ^0.2.3 - [@not-a-socket-override/switch-in-fp](https://npm.io/package/@not-a-socket-override/switch-in-fp.md) ^3.0.1 ## Alternatives - [@mapbox/jsonlint-lines-primitives](https://npm.io/package/@mapbox/jsonlint-lines-primitives.md) — 5.3M weekly downloads - [reftools](https://npm.io/package/reftools.md) — 3.5M weekly downloads - [@hey-api/openapi-ts](https://npm.io/package/@hey-api/openapi-ts.md) — 3.5M weekly downloads - [@mapbox/geojson-rewind](https://npm.io/package/@mapbox/geojson-rewind.md) — 2.4M weekly downloads - [turbo-stream](https://npm.io/package/turbo-stream.md) — 1.7M weekly downloads ## Recent versions - 0.4.7 (latest) — 2026-07-21 - 0.0.2 (countingup-legacy-first-version) — 2026-02-27 - 0.4.6 — 2026-07-21 - 0.4.5 — 2026-03-03 - 0.4.4 — 2026-03-03 - 0.4.3 — 2026-02-05 - 0.4.2 — 2026-02-05 - 0.4.1 — 2026-02-03 - 0.4.0 — 2026-02-03 - 0.3.0 — 2025-12-29 - 0.2.5 — 2024-05-22 - 0.2.4 — 2024-05-22 - 0.2.3 — 2023-01-13 - 0.2.2 — 2023-01-13 - 0.2.1 — 2023-01-13 - … 7 more at https://npm.io/package/countingup/versions ## README # Countingup Countingup is a 10x math library. It provides a Counter class to count up and down with customizations. There are also math utilities that you can use with it. ## Installation Using npm: ```sh npm install countingup ``` In Node.js ```javascript const countingup = require('countingup') ``` ## Counter class The ``Counter`` class provides a tool to count numbers. Initializing ```javascript const Counter = countingup.Counter const myCounter = new Counter() ``` Counting ```javascript myCounter.count() console.log(myCounter.getCurrentNumber()) // 1 ``` Resetting ```javascript myCounter.reset() console.log(myCounter.getCurrentNumber()) // 0 ``` ### Bonus Features Customizing the Increment ```javascript myCounter.count() console.log(myCounter.getCurrentNumber()) // 1 myCounter.count(3) console.log(myCounter.getCurrentNumber()) // 4 ``` Customizing the Direction This allows you to change the direction so it counts down and subtracts ```javascript myCounter.reset() myCounter.count(5) console.log(myCounter.getCurrentNumber()) // 5 myCounter.count(5, countingup.Counter.DIRECTION.REVERSE) // 0 ``` By default it will be forwards (countingup.Counter.DIRECTION.FORWARDS) Customizing the Starting Number ```javascript const myCounter2 = new Counter(4) console.log(myCounter2.getCurrentNumber()) // 4 myCounter2.reset(3) console.log(myCounter2.getCurrentNumber()) // 3 ``` ## Math Utilities Countingup includes a suite of math functions that power the underlying logic and can be used for standalone calculations. These utilities handle both numbers and numeric strings. ### Basic Operations ```js const { add, subtract, multiply, divide } = require("countingup") console.log(add(5, 10)) // 15 console.log(subtract(20, 5)) // 15 console.log(multiply(3, 4)) // 12 console.log(divide(100, 4)) // 25 ``` ### Advanced Operations ```js const { modulo, pow } = require("countingup") console.log(modulo(10, 3)) // 1 console.log(pow(2, 3)) // 8 ``` ## Constants Countingup provides some USEFUL constants. ```js const assert = require("assert") const countingup = require("countingup") assert(countingup.E === Math.E) assert(countingup.PI === Math.PI) assert(countingup.SQRT2 === Math.SQRT2) assert(countingup.SQRT1_2 === Math.SQRT1_2) assert(countingup.LN2 === Math.LN2) assert(countingup.LN10 === Math.LN10) assert(countingup.LOG2E === Math.LOG2E) assert(countingup.LOG10E === Math.LOG10E) assert(countingup.ZERO === 0) assert(countingup.NaN !== countingup.NaN) assert(countingup.POSITIVE_INFINITY === Infinity) assert(countingup.NEGATIVE_INFINITY === -Infinity) ``` ## Tests Countingup has tests. They are not very comprehensive, because they were generated by AI, but they are tests. --- _Source: https://npm.io/package/countingup · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._