isCyclical

Returns true if an array will continue to be cyclical if the value supplied is pushed onto it.

Install

npm install is-cyclical --save

Demo

var isCyclical = require('is-cyclical');

isCyclical( [ 1, 2, 3, 1, 2, 3 ], 1 )
//Returns true

//While

isCyclical( [ 1,2,3,4,1,2 ], 2)
//returns false because appending it to the array would break the cycle

If the array were [1,2,3,1,2,3] and the value added were 2 that would break the cycle therefore return false

Deep Equality

isCyclical.deepEquality is initially set to true can be set to false to use an == test rather than a deep equality test

Use Case

I made a game playing AI, in order for the AI to not fall into a loop of making the same moves I made this library so I know the next move will be different than the ones prior(No matter how long of a cycle of moves).