String validation

A powerful obfuscator for JavaScript and Node.js

UAParser.js - Free & open-source JavaScript library to detect user's Browser, Engine, OS, CPU, and Device type/model. Runs either in browser (client-side) or node.js (server-side).

Build a class attribute string quickly

node byte string parser

Get the native JavaScript type of a value, fast. Used by superstruct, micromatch and many others!

Sanitize string for use as filename

Fast string hashing function for Node.JS.

JavaScript/Node.js utility. Returns `true` if the value is a number or string number. Useful for checking regex match results, user input, parsed strings, etc.

Converts a Buffer/String to a readable stream.

string representations of objects in node and the browser

Pass two numbers, get a regex-compatible source string for matching ranges. Fast compiler, optimized regex, and validated against more than 2.78 million test assertions. Useful for creating regular expressions to validate numbers, ranges, years, etc.

get a unique short hash of a string

An ES6 Tagged String Literal tag that can interpolate Node.JS streams, strings, arrays and Promises and produces a stream.

Universal library for detecting devices based on the string `UserAgent`. We can identify: App, Bot, OS, Browser, Device brand, Device model and Device type (smartphone, phablet, tablet, desktop, TV and other types, total 13)

Easily add filtering, sorting, and pagination to your Node.js REST API through your old friend: the query string!

Ruby-like simple string interpolation for Node.js

Strip block comments or line comments from JavaScript code.

OData query string parser for node.js.

Blazingly fast measure string width in pixels on the server in Javascript (Node.Js)