In general Angular2 should follow TypeScript naming conventions. See: https://github.com/Microsoft/TypeScript/wiki/Coding-guidelines

Classes:

• Example: Compiler, ApplicationMetadata
• Camel case with first letter upper-case
• In general prefer single words. (This is so that when appending Proto or Factory the class is still reasonable to work with.)
• Should not end with Impl or any other word which describes a specific implementation of an interface.

Interfaces:

• Follow the same rules as Classes
• Should not have I or Interface in the name or any other way of identifying it as an interface.

Methods and functions:

• Example: bootstrap, someMethod
• Should be camel case with first lower case

Constants

• Example: CORE_DIRECTIVES
• Should be all uppercase with SNAKE_CASE