Primeiro Projeto - Prime Number Generator

A lightweight, zero-dependency JavaScript prime number generator utilizing closures to maintain state and optimize primality checks.

Features

• Closure-Based: Retains generator state internally without polluting the global scope.
• Optimized Primality Testing: Divisor checks only run up to $\sqrt{N}$ against previously discovered primes.
• Sequential Infinite Generation: Call the generated function continuously to yield consecutive primes.
• Zero Dependencies: Pure JavaScript.

Installation

npm install primeiro-projeto

(Or if installed as a scoped package:)

npm install @chinmaya_704/primeiro-projeto

Usage

const createPrimeGenerator = require('primeiro-projeto');

// Instantiate the prime generator closure
const nextPrime = createPrimeGenerator();

// Generate consecutive prime numbers
console.log(nextPrime()); // 2
console.log(nextPrime()); // 3
console.log(nextPrime()); // 5
console.log(nextPrime()); // 7
console.log(nextPrime()); // 11

// Generate the first 10 primes in a loop
for (let i = 0; i < 10; i++) {
  console.log(nextPrime());
}

API Reference

createPrimeGenerator()

Creates an isolated closure containing an array of cached primes and an internal counter.

• Returns: Function — getNextPrime()

getNextPrime()

Advances the counter and returns the next prime number.

• Returns: number — The next consecutive prime number.

License

ISC