@gravity-ui/graph/build/react-components/GraphContext.js

Modern graph editor component

import React, { createContext, useContext } from "react";
export const GraphContext = createContext(null);
/**
 * Hook for getting Graph instance from context
 *
 * @throws {Error} If used outside of GraphCanvas
 */
export function useGraphContext() {
    const context = useContext(GraphContext);
    if (!context) {
        throw new Error("useGraphContext must be used within a GraphCanvas component. " +
            "Make sure your GraphLayer/GraphPortal components are children of GraphCanvas.");
    }
    return context;
}
export function GraphContextProvider({ graph, children }) {
    const contextValue = React.useMemo(() => ({ graph }), [graph]);
    return React.createElement(GraphContext.Provider, { value: contextValue }, children);
}