ra-core/dist/dataProvider/combineDataProviders.js

Core components of react-admin, a frontend Framework for building admin applications on top of REST services, using ES6, React

import { defaultDataProvider } from "./defaultDataProvider.js";
/**
 * Combine multiple data providers into one.
 *
 * @param dataProviderMatcher A function that returns a data provider for a given resource.
 *
 * @example
 * const dataProvider = combineDataProviders(resource => {
 *    switch(resource) {
 *       case 'posts':
 *       case 'comments':
 *          return dataProvider1;
 *       case 'users':
 *          return dataProvider2;
 *       default:
 *         throw new Error('Unknown resource');
 *    }
 * });
 */
export const combineDataProviders = (dataProviderMatcher) => new Proxy(defaultDataProvider, {
    get: (target, name) => {
        if (name === 'then') {
            return null;
        }
        return (resource, ...params) => {
            if (typeof name === 'symbol') {
                return;
            }
            return dataProviderMatcher(resource)[name](resource, ...params);
        };
    },
});
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