This is an outdated version of the Habitat library. I keep it here because some of my older projects still use it. The new version is here: github.com/l2wilson94/Habitat

Habitat

Habitat is a collection of javascript libraries.
Here are a few of its features.

Properties

Edit property definitions with the underscore (_) proxy.

luke._.fullName.get = (self) => `${self.firstName} ${self.lastName}`

luke.fullname //"Luke Wilson"

You can specify the type of a property.

luke._.name.type = Text

luke.name = 24 //Type Error!

Types

You can do a type check.

"Luke".is(String)
(25).is(Number)
[6, 8].is(Array)

You can do a type conversion.

"24".as(Number)
(24).as(String)

You can make your own type.

const UpperCase = new Type({
	check: (s) => s == s.as(UpperCase),
	convert: (s) => s.toUpperCase(),
})

"HELLO".is(UpperCase) //true

Matching

You can pattern match a value.

match (input,
    String,     "It's a string",
    "Luke",     "It's my name",
    [Int, Int], "It's a list of two integers",
    Any,        "It's something else",
)

You can make a function that pattern matches its arguments.

const fibonacci = matcher (
    [0], 0,
    [1], 1,
    [UInt], n => fibonacci(n-1) + fibonacci(n-2),
)

Bracketless

You can call functions without brackets.

print.x= "Hello world!"

friends.o.forEach.x= friend => print(`Hello ${friend}`)

You can assign multiple properties to an object at once.

luke.o={
    name: "Luke",
    age: 25,
}

Other Stuff

Check out the wiki.