Idea for new interface for admittance js

admittance-simple.js

var fs              = require('fs')
  , admittance      = require('admittance')
 
//read from the text file where we store pairs of user ids and permissions
var storeR = fs.createReadStream(__dirname + '/my-store.txt')
 
//read in permissions
storeR.pipe(admittance)
 
//do a permissions check
if (admittance(userid).is('admin')) {
    //yay, user is admin!
}

admittance.js

var fs              = require('fs')
  , admittance      = require('admittance')

//read from the text file where we store pairs of user ids and permissions
var storeR = fs.createReadStream(__dirname + '/my-store.txt')

//write to the text file where we store pairs of user ids and permissions
var storeW = fs.createReadStream(__dirname + '/my-store.txt')

//read in permissions
storeR.pipe(admittance)

//create a permission and store it
admittance(userid, 'admin').pipe(storeW)

//define a tree permission structure
admittance('editor', 'admin') //admin can do anything an editor can
  .admittance('subscriber', 'editor') //editor can do anything a subscriber can
  .admittance('user', 'editor') //editor can also do anything a user can
  .pipe(storeW) //persist the structure

//do a permissions check
if (admittance(userid).is('admin')) {
    //yay, user is admin!
}