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- function addUniqueItem(arr, item) {
- if (arr.indexOf(item) === -1)
- arr.push(item);
- }
- function removeItem(arr, item) {
- const index = arr.indexOf(item);
- if (index > -1)
- arr.splice(index, 1);
- }
- // Adapted from array-move
- function moveItem([...arr], fromIndex, toIndex) {
- const startIndex = fromIndex < 0 ? arr.length + fromIndex : fromIndex;
- if (startIndex >= 0 && startIndex < arr.length) {
- const endIndex = toIndex < 0 ? arr.length + toIndex : toIndex;
- const [item] = arr.splice(fromIndex, 1);
- arr.splice(endIndex, 0, item);
- }
- return arr;
- }
- export { addUniqueItem, moveItem, removeItem };
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