defece95fc
Co-authored-by: Liyas Thomas <liyascthomas@gmail.com> Co-authored-by: Nivedin <53208152+nivedin@users.noreply.github.com> Co-authored-by: Andrew Bastin <andrewbastin.k@gmail.com>
22 lines
522 B
TypeScript
22 lines
522 B
TypeScript
/**
|
|
* Get the indexes that are affected by the reorder
|
|
* @param from index of the item before reorder
|
|
* @param to index of the item after reorder
|
|
* @returns Map of from to to
|
|
*/
|
|
|
|
export function getAffectedIndexes(from: number, to: number) {
|
|
const indexes = new Map<number, number>()
|
|
indexes.set(from, to)
|
|
if (from < to) {
|
|
for (let i = from + 1; i <= to; i++) {
|
|
indexes.set(i, i - 1)
|
|
}
|
|
} else {
|
|
for (let i = from - 1; i >= to; i--) {
|
|
indexes.set(i, i + 1)
|
|
}
|
|
}
|
|
return indexes
|
|
}
|