A lightweight (read: relatively fast) type-checking library in CoffeeScript.
{overload} = require "typely"
class Multiplier
total: 1
multiply: overload (match) ->
match "array", (array) -> @multiply element for element in array
match "number", (number) -> @total *= number
multiplier = new Multiplier
multiplier.multiply 2
multiplier.multiply [ 3, 4, 5 ]
console.log multiplier.total
Typely is limited to checking for types, as per Douglas Crockford's typeOf function. That is: null, undefined, boolean, number, string, date, regexp, array, object, and function. This limitation allows it to run relatively fast, by simply using as an index a string based on the types of the given arguments and seeing whether it returns a function.
`
npm install typely