@graphql-tools/graphql/esm/utilities/getOperationRootType.js

Fork of GraphQL.js

import { GraphQLError } from '../error/GraphQLError.js';
/**
 * Extracts the root type of the operation from the schema.
 *
 * @deprecated Please use `GraphQLSchema.getRootType` instead. Will be removed in v17
 */
export function getOperationRootType(schema, operation) {
    if (operation.operation === 'query') {
        const queryType = schema.getQueryType();
        if (!queryType) {
            throw new GraphQLError('Schema does not define the required query root type.', { nodes: operation });
        }
        return queryType;
    }
    if (operation.operation === 'mutation') {
        const mutationType = schema.getMutationType();
        if (!mutationType) {
            throw new GraphQLError('Schema is not configured for mutations.', {
                nodes: operation,
            });
        }
        return mutationType;
    }
    if (operation.operation === 'subscription') {
        const subscriptionType = schema.getSubscriptionType();
        if (!subscriptionType) {
            throw new GraphQLError('Schema is not configured for subscriptions.', {
                nodes: operation,
            });
        }
        return subscriptionType;
    }
    throw new GraphQLError('Can only have query, mutation and subscription operations.', { nodes: operation });
}