TECH TALK#7: CUJO.JS

Project Owners

Brian Cavalier is a server-side Java guy turned front-end engineer, and open source fanatic working at VMware.

John Hann has been pushing the limits of the web since 1996 and has been totally engulfed in JavaScript, HTML, and CSS since 2004. He works at VMware.

What is cujo?

• cujo is an architectural toolkit for next generation JavaScript applications. It

encourages highly modular development, declarative application assembly, and embraces the asynchronous nature of JavaScript and its

fusion of object-oriented and functional programming styles.

What is cujo?

• You focus on the business logic of your application components. cujo loads and assembles your components and then wires them all together.

What is cujo?

• “I'm also interested because while wire.js'sdeclarative syntax isn't compile-to-js, it is in

it's own way a separate language.”

What’s in cujo?

• curl.js: A small, fast AMD/CJS module loader with dependency management

• wire.js: A light, fast, flexible Javascript IOC container

• meld.js: AOP for JS with before, after, afterReturning, afterThrowing, around, pointcuts, and more

• when.js: A lightweight Promise and when() implementation, plus other async goodies

What’s in cujo?

• cram.js: A simple Javascript module concatenator

• poly.js: A modular, flexible set of ES5-ish shims

Concepts

General concepts

• IOC (Inversion of control)

• Dependency Inversion

• Application Composition

cujo concepts

• Wire specs• Contexts• Components• Factories• Proxies• Component Lifecycle• Facets• References• Connections

Break Down

connections

• Dependency Injection

• DOM events

• Javascript to Javascript "events”

• Aspect Oriented Programming (AOP) advice

components

• Simple Types

• Application Components

– module, create, compose, literal

– wire: recursively invokes wire on another wire spec

• Function Components

THANK YOU~