Prevent files and modules being required more than once. Helps with auto-reloaders or test runners that insist.

Gets you a JSON Schema from PostgreSQL or SQLite3. Also supports arrays and default values. Use it for introspection or preparing your domain models like with Rails's Active Record.

Browserify plugin for substituting modules everywhere. It expands the package.json "browser" field to work for nested dependencies.

Standard HTTP error class for Node.js. Proper serialization, no bloat. Extensible.

JavaScript function to use generators for request handlers and middleware. Calls next only if there was an error. Useful for Express routes.

A small JavaScript scheduling algorithm library. Useful for round-robin etc.

JavaScript library for parsing, stringifying and manipulating media types. Useful for content negotiation. Follows RFC2045, supports quoted parameters, all allowed characters etc.

Library for JavaScript to parse RFC 822 ARPA Internet Text Messages types and bodies. Works well with InternetMessage.js.

Library for JavaScript to parse and stringify RFC 822 ARPA Internet Text Messages. Useful format for messages with headers and body. Similar to HTTP.

An event library for JavaScript and Node.js that implements the observer pattern (a.k.a publish/subscribe). Similar to Node's EventEmitter and Backbone.Events, but independent, minimal and light-we…

Range object for JavaScript. Supports exclusive and infinite ranges. Stringifies to PostgreSQL compatible format.

Strict equality test (like ===) for JavaScript that handles both built-in and custom value objects (those with a valueOf function).

Flash messages middleware for Express/Connect with support for redirects and immediate use. Useful for informational or errors messages. Like Rails's Flash.

Fetch API mixin to buffer and parse response bodies. Supports media type patterns for content type specific custom parsers.

A JavaScript Fetch API mixin to throw FetchError when the request fails or response has an error.

Deploy with Rsync from any local (or remote) repository when using Mina.

Fetch API mixin for urlencoding an object and setting Content-Type if unset. Functional and immutable.

Fetch API mixin for stringifying JSON and setting Content-Type if unset. Functional and immutable.

Fetch API mixin to set a default base URL and options. Functional and immutable.

A consistent cross-browser document.elementFromPoint function. Works around idiosyncracies of old WebKits et al.

Change between installed Node versions in your current shell.

Möll's Disco Playground of NativeScript