Check for what you need
Mainly for framework developers, although it is just as usable in an app
npm install --save type-checking
- By registering (recommended, but can cause conflicts)
require('type-checking/register')('responds_to')
array = []
array.responds_to 'indexOf' #true
array.responds_to ['indexOf','join','concat'] #true
class ArrayInterface
indexOf:->
join:->
concat:->
array.responds_to ArrayInterface #true
- Directly
responds_to = require 'type-checking'
array = []
responds_to array, 'indexOf' #true