15 lines
340 B
JavaScript
15 lines
340 B
JavaScript
function groupBy(arr, getKeyFromItem) {
|
|
const result = {};
|
|
for (let i = 0; i < arr.length; i++) {
|
|
const item = arr[i];
|
|
const key = getKeyFromItem(item);
|
|
if (!Object.hasOwn(result, key)) {
|
|
result[key] = [];
|
|
}
|
|
result[key].push(item);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
export { groupBy };
|