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/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
/**
* Move an array item within the current array
*
* @param array
* @param fromIndex
* @param toIndex
* @returns {Array<any>}
*/
export function moveArrayItem(
array: any[] | KnockoutObservableArray <any>,
fromIndex: number,
toIndex: number,
): any[] | KnockoutObservableArray <any> {
array.splice(toIndex, 0, array.splice(fromIndex, 1)[0]);
return array;
}
/**
* Move an array item from one array into another
*
* @param item
* @param array
* @param toIndex
* @returns {Array<any>}
*/
export function moveArrayItemIntoArray(
item: any,
array: any[] | KnockoutObservableArray <any>,
toIndex: number,
): any[] | KnockoutObservableArray <any> {
array.splice(toIndex, 0, item);
return array;
}
/**
* Remove an array item
*
* @param array
* @param item
* @returns {Array<any>}
*/
export function removeArrayItem(
array: any[] | KnockoutObservableArray <any>,
item: any,
): any[] | KnockoutObservableArray <any> {
const index = array.indexOf(item);
if (index > -1) {
array.splice(index, 1);
}
return array;
}
/**
* Search outwards from an array item until a callback matches
*
* @author https://github.com/thejameskyle/outward-search
*
* @param {any[]} items
* @param {number} start
* @param {(item: any, index: number) => boolean} callback
* @returns {any}
* @api
*/
export function outwardSearch(
items: any[],
start: number,
callback: (item: any, index: number) => boolean,
) {
if (!items.length) {
return null;
}
if (start < 0 || start > items.length - 1) {
throw new TypeError("starting index must be within bounds of array");
}
const max = items.length - 1;
let low = start;
let high = start + 1;
while (true) {
const hitMin = low < 0;
const hitMax = high > max;
if (hitMin && hitMax) {
break;
}
if (!hitMin) {
const item = items[low];
const result = callback(item, low);
if (!!result) {
return item;
}
low--;
}
if (!hitMax) {
const item = items[high];
const result = callback(item, high);
if (!!result) {
return item;
}
high++;
}
}
return null;
}