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: / var / canvas / node_modules / react-beautiful-dnd / src / state /

Filename : dimension-structures.js

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// @flow
import memoizeOne from 'memoize-one';
import { values } from '../native-with-fallback';
import type {
  DroppableDimension,
  DroppableDimensionMap,
  DraggableDimension,
  DraggableDimensionMap,
} from '../types';

export const toDroppableMap = memoizeOne(
  (droppables: DroppableDimension[]): DroppableDimensionMap =>
    droppables.reduce((previous, current) => {
      previous[current.descriptor.id] = current;
      return previous;
    }, {}),
);

export const toDraggableMap = memoizeOne(
  (draggables: DraggableDimension[]): DraggableDimensionMap =>
    draggables.reduce((previous, current) => {
      previous[current.descriptor.id] = current;
      return previous;
    }, {}),
);

export const toDroppableList = memoizeOne(
  (droppables: DroppableDimensionMap): DroppableDimension[] =>
    values(droppables),
);

export const toDraggableList = memoizeOne(
  (draggables: DraggableDimensionMap): DraggableDimension[] =>
    values(draggables),
);