lucent-laravel/front/js/svelte/edges/sortEdges.js

export function sortByField(from, to, edges, fieldName, references) {
  if (from === to) {
    return edges;
  }
  let referenceIds = references.map((r) => r.id);
  let edgesTosort =
    edges?.filter(
      (ed) =>
        ed.field === fieldName &&
        ed.depth === 1 &&
        referenceIds.includes(ed.target),
    ) ?? [];
  let remainingEdge =
    edges?.filter((ed) => !(ed.field === fieldName && ed.depth === 1)) ?? [];

  edgesTosort = array_move(edgesTosort, from, to);
  return [...remainingEdge, ...edgesTosort];
}

export function array_move(arr, old_index, new_index) {
  if (new_index >= arr.length) {
    var k = new_index - arr.length + 1;
    while (k--) {
      arr.push(undefined);
    }
  }
  arr.splice(new_index, 0, arr.splice(old_index, 1)[0]);
  return arr; // for testing
}