coffeescript.md

Coffeescript guidelines

Formatting

• Never ever use tabs to indent, always 2 spaces
• Indent continued lines 2 spaces

Code

• Initialize arrays using []
• Initialize empty objects and hashes using {}
• Use CamelCase for classes, smallCamelCase for variables and functions, SCREAMING_SNAKE_CASE for constants, _single_leading_underscore for private variables and functions.
• Prefer is to == or ===
• Prefer or and and to || and &&
• Avoid functions with more than 10 lines
• Avoid prototype definitions with more than 100 lines
• Avoid functions with more than 4 parameters
• Avoid functions with more than 3 return values in callback
• Prefer single quotes for strings
• Prefer an asynchronous workflow over a synchronous one
• Avoid more than 3 nested callbacks
• Avoid explicit return