@hello-pangea/dnd/src/state/get-displaced-by.ts

Beautiful and accessible drag and drop for lists with React

import memoizeOne from 'memoize-one';
import type { Position } from 'css-box-model';
import type { Axis, DisplacedBy } from '../types';
import { patch } from './position';

// TODO: memoization needed?
export default memoizeOne(function getDisplacedBy(
  axis: Axis,
  displaceBy: Position,
): DisplacedBy {
  const displacement: number = displaceBy[axis.line];
  return {
    value: displacement,
    point: patch(axis.line, displacement),
  };
});