@rezzon8/math-utils

Basic math utility functions with TypeScript support.

Installation

npm install @rezzon8/math-utils

Usage

import { add, subtract, multiply, divide, modulus } from '@rezzon8/math-utils'

// Addition
const sum = add(5, 3) // 8

// Subtraction
const difference = subtract(10, 4) // 6

// Multiplication
const product = multiply(6, 7) // 42

// Division
const quotient = divide(20, 5) // 4

// Modulus
const remainder = modulus(17, 5) // 2

// Division by zero throws an error
try {
  divide(10, 0)
} catch (error) {
  console.error(error.message) // "Division by zero is not allowed"
}

API

add(a: number, b: number): number

Returns the sum of two numbers.

Parameters:

• a - First number
• b - Second number

Returns: The sum of a and b

subtract(a: number, b: number): number

Returns the difference of two numbers.

Parameters:

• a - First number
• b - Second number

Returns: The difference (a - b)

multiply(a: number, b: number): number

Returns the product of two numbers.

Parameters:

• a - First number
• b - Second number

Returns: The product of a and b

divide(a: number, b: number): number

Returns the quotient of two numbers.

Parameters:

• a - Dividend
• b - Divisor

Returns: The quotient (a / b)

Throws: Error if b is zero

modulus(a: number, b: number): number

Returns the remainder of dividing two numbers.

Parameters:

• a - Dividend
• b - Divisor

Returns: The remainder (a % b)

Development

# Install dependencies
npm install

# Run tests
npm test

# Run tests in watch mode
npm run test:watch

# Build the package
npm run build

# Lint code
npm run lint

# Fix linting issues
npm run lint:fix

# Format code
npm run format

# Check formatting
npm run format:check

Features

• ✅ TypeScript support with full type definitions
• ✅ ESM modules
• ✅ Comprehensive test coverage with Vitest
• ✅ Modern ESLint + Prettier configuration
• ✅ Source maps included

Repository

https://github.com/rezzon8/npm-package

License

ISC © 2025