python-utils-73

python-utils-73 is a lightweight TypeScript library that brings the simplicity and power of Python's most beloved built-in functions directly into modern JavaScript and TypeScript workflows. It provides highly optimized, fully type-safe implementations of utilities like range, zip, and Python-style collections to streamline your data manipulation tasks.

Features

• Lazy Iterables: Optimized generator-based implementations of range(), zip(), and enumerate() for memory-efficient looping.
• Pythonic Collections: Fully-typed Counter and DefaultDict classes that mimic their Python standard library counterparts.
• String Utilities: Native TS ports of helper functions like title(), swapcase(), and advanced slice simulators.
• Zero Dependencies: Extremely small footprint, written in strict TypeScript with comprehensive test coverage.

Installation

Install the package via npm, yarn, or pnpm:

npm install python-utils-73

Or using yarn:

yarn add python-utils-73

Usage

Here is how easily you can use Pythonic concepts in TypeScript:

import { range, zip, Counter, DefaultDict } from 'python-utils-73';

// 1. Lazy evaluation with range and zip
const indices = range(0, 6, 2); // [0, 2, 4]
const letters = ['a', 'b', 'c'];

for (const [num, char] of zip(indices, letters)) {
  console.log(`${num} -> ${char}`); 
  // Outputs: "0 -> a", "2 -> b", "4 -> c"
}

// 2. High-performance collections
const wordCount = new Counter('abracadabra');
console.log(wordCount.mostCommon(2)); 
// Outputs: [ ['a', 5], ['b', 2] ]

const listDict = new DefaultDict<string, number[]>(() => []);
listDict.get('user_ids').push(101);
console.log(listDict.get('user_ids')); // Outputs: [101]

License

This project is licensed under the MIT License - see the LICENSE file for details.