Node.js Utility Toolkit (18 TS Functions, Zero Deps)

18 tree-shakeable utilities for date, string, number, object, array and validation

A zero-dependency TypeScript utility library ready to publish to npm. Dual ESM/CJS builds, full JSDoc with examples, and 44 passing unit tests.

What's included

• 18 pure functions — formatDate, timeAgo, truncate, slugify, camelCase, toKebabCase, formatCurrency, clamp, round, percentChange, deepMerge, pick, omit, unique, chunk, groupBy, isValidEmail, isValidUrl
• Zero runtime dependencies — safe anywhere
• ESM + CommonJS — dual build with types
• Full JSDoc — @param, @returns, @example on every function
• 44 unit tests — Node.js node:test

Quick Start

npm install
npm run build

Stack

TypeScript · Node.js 18+ · Zero dependencies

Use cases

• Any Node or browser project
• API helpers
• Data processing pipelines
• Internal micro-libraries