protostate

Prototypal inheritance based states.

var State = require('protostate');
 
var state = new State({one:1});
state = State.next(state, {two:2});
var two = state;
state = State.next(state, {three:3});
state = State.next(state, {four:4});
state = State.next(state, {five:5});
var five = state;
 
console.log(State.diff(two, five));
// [five, four, three]

API

• new State({optional:'setup'}) or simply State({...})
• State.next(state, {optional:'setup'}) create a new state that inherits another one
• State.prev(state) return previously inherited state, if any, or null
• State.diff(prev, state) or State.diff(state, prev) return an array of keys representing current state differences
• State.keys(state) return all state keys, inherited or not (Object.keys(state) to obtain only current list of keys)
• State.merge(state) flattened new state
• State.size(state) inheritance chain dept (how many states in the chain)

ISC License