protomorphism

Polymorphism via Clojure-style protocols.

Install

npm install protomorphism

Example

``js
const protocol = require('protomorphism')

// create a new protocol Pattern, which requires a
// matches function to be implemented
const Pattern = protocol({
matches: function(pattern, string){
// returns true if string matches pattern
}
})

// Make all strings implement pattern by exact matching
Pattern.implementation(String, {
matches: function(pattern, string){
return pattern === string
}
})

// Make all arrays implement pattern by reporting a match
// when the array contains the target string
Pattern.implementation(Array, {
matches: function(arr, string){
return arr.indexOf(string) !== -1
}
})

// Make all regular expressions implement pattern
Pattern.implementation(RegExp, {
matches: function(regexp, string){
return !!regexp.test(string)
}
})

// Pattern.matches is the polymorphic
// matches function which you can use on
// any object who implements Pattern.
const matches = Pattern.matches
const patterns = [
'README.md',
'README',
['README.md', 'readme.md'],
/README\.(md|rdoc|txt)/i
]

let matched = patterns.some(function(pattern){
return matches(pattern, input)
})
``