getIncrementDecrement

will return numbers result from decrementing and incrementing, including its start number

 
    var getIncrementDecrement = require('get-increment-decrement').getIncrementDecrement;
 
    var startNumber = 5;
    var length = 4;
    var minimumLimit = 1;
    var maximumLimit = 10;
 
    var incrementDecrement = getIncrementDecrement({
        startNumber : startNumber,
        lengthNeeded : length,
        minimumLimit : minimumLimit,
        maximumLimit : maximumLimit
    });
 
    console.log(incrementDecrement) // [1,2,3,4,5,6,7,8,9]

the result actually will not be ordered

Options

• startNumber => start number for incrementing and decrementing
• length => how much number you get from incrementing and decrementing, example : if its 4, it will get 4 numbers from incrementing and 4 number from decrementuing
• minimumLimit => minimum limit for decrementing, decrementing will not return number below minimum limit
• maximumLimit => maximum limit for incrementing, incrementing will not return number above maximum limit

the result actually will not be ordered

if the decrementing get below minimum limit, the length quota that is empty will go to incrementing side

 
    var getIncrementDecrement = require('get-increment-decrement').getIncrementDecrement;
 
    var startNumber = 2;
    var length = 3;
    var minimumLimit = 1;
    var maximumLimit = 10;
 
    var incrementDecrement =  getIncrementDecrement({
        startNumber : startNumber,
        lengthNeeded : length,
        minimumLimit : minimumLimit,
        maximumLimit : maximumLimit
    });
 
    console.log(incrementDecrement) // [1,2,3,4,5,6,7] -> decrementing only get [1], so the quota only fullfilled one, need two more, so incrementing side get extra two quota, [3,4,5,6,7]
 

if the incrementing get above maximum limit, the length quota that is empty will go to decrementing side

 
    var getIncrementDecrement = require('get-increment-decrement').getIncrementDecrement;
 
    var startNumber = 9;
    var length = 3;
    var minimumLimit = 1;
    var maximumLimit = 10;
 
    var incrementDecrement = getIncrementDecrement({
        startNumber : startNumber,
        lengthNeeded : length,
        minimumLimit : minimumLimit,
        maximumLimit : maximumLimit
    });
 
    console.log(incrementDecrement) // [4,5,6,7,8,9,10] -> incrementing only get [10], so the quota only fullfilled one, need two more, so incrementing side get extra two quota, [4,5,6,7,8]
 

inside this module there are two private function, only intended to be used inside function getIncrementDecrement, but you can used it

getDecrement

 
    var getDecrement = require('get-increment-decrement')._getIncrement;
 
    var DecrementstartNumber = 9;
    var length = 3;
    var minimumLimit = 1;
    
    var decrement = getDecrement({
        startNumber : startNumber,
        lengthNeeded : length,
        minimumLimit : minimumLimit,
    });
 
    console.log(decrement) // [8,7,6] -> start number not included
 
    var startNumber = 9;
    var length = 3;
    var minimumLimit = 7;
    
    var decrement = getDecrement({
        startNumber : startNumber,
        lengthNeeded : length,
        minimumLimit : minimumLimit,
    });
 
    console.log(decrement) // [8,7] -> not get below minimum limit
 

getIncrement

 
    var getIncrement = require('get-increment-decrement')._getIncrement;
 
    var startNumber = 4;
    var length = 3;
    var maximumLimit = 10;
 
    var increment = getIncrement({
        startNumber : startNumber,
        lengthNeeded : length,
        maximumLimit : maximumLimit
    });
 
    console.log(increment) // [5,6,7] -> start number not included
    
    var startNumber = 4;
    var length = 3;
    var maximumLimit = 6;
 
    var increment = getIncrement({
        startNumber : startNumber,
        lengthNeeded : length,
        maximumLimit : maximumLimit
    });
 
    console.log(increment) // [5,6] -> not get above maximum limit

Installing

npm install get-increment-decrement

m test`

Decrement