Rules for JS

• Follow Google Code Style Guide
• Use MDN documentation
• Use jswiki as guide to JS libraries
• Use "use strict"; everywhere
• Make custom errors right
• Introduce library whenever it's possible
• Use right blocks style
• Avoid any kind of init() calls in constructor
• Remove listeners and do further cleanup
• Don't use for (var k in arr) for iterating arrays
• Use polyfills, but with care
• catch(err) doesn't need var err;
• Use err (not error or exc) for error variables
• Know about harmony - it is already partially available in browsers and node
• Use Object.defineProperty() when available (not __defineGetter__/__defineSetter__)
• Never us this.constructor.super_ to access superclass

node.js

• Use project template
• Properly use require and exports in your modules
• Use async
• And other useful modules
• Use path.join()
• Don't write "for node.js" in package.json description
• Do write "for node.js" in description on github
• You can use harmony in node (partially for now)