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