react-dnd/lib/common/DndProvider.js

Drag and Drop for React

import * as React from 'react';
import { memo } from 'react';
import { DndContext, createDndContext } from './DndContext';
/**
 * A React component that provides the React-DnD context
 */
export const DndProvider = memo(({ children, ...props }) => {
    const context = 'manager' in props
        ? { dragDropManager: props.manager }
        : createSingletonDndContext(props.backend, props.context, props.options, props.debugMode);
    return React.createElement(DndContext.Provider, { value: context }, children);
});
const instanceSymbol = Symbol.for('__REACT_DND_CONTEXT_INSTANCE__');
function createSingletonDndContext(backend, context = getGlobalContext(), options, debugMode) {
    const ctx = context;
    if (!ctx[instanceSymbol]) {
        ctx[instanceSymbol] = createDndContext(backend, context, options, debugMode);
    }
    return ctx[instanceSymbol];
}
function getGlobalContext() {
    return typeof global !== 'undefined' ? global : window;
}