@wordpress/block-editor/build-module/store/array.js

Generic block editor.

// packages/block-editor/src/store/array.js
function insertAt(array, elements, index) {
  return [
    ...array.slice(0, index),
    ...Array.isArray(elements) ? elements : [elements],
    ...array.slice(index)
  ];
}
function moveTo(array, from, to, count = 1) {
  const withoutMovedElements = [...array];
  withoutMovedElements.splice(from, count);
  return insertAt(
    withoutMovedElements,
    array.slice(from, from + count),
    to
  );
}
export {
  insertAt,
  moveTo
};
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