@graphql-tools/graphql/esm/validation/rules/LoneAnonymousOperationRule.js

Fork of GraphQL.js

import { GraphQLError } from '../../error/GraphQLError.js';
import { Kind } from '../../language/kinds.js';
/**
 * Lone anonymous operation
 *
 * A GraphQL document is only valid if when it contains an anonymous operation
 * (the query short-hand) that it contains only that one operation definition.
 *
 * See https://spec.graphql.org/draft/#sec-Lone-Anonymous-Operation
 */
export function LoneAnonymousOperationRule(context) {
    let operationCount = 0;
    return {
        Document(node) {
            operationCount = node.definitions.filter(definition => definition.kind === Kind.OPERATION_DEFINITION).length;
        },
        OperationDefinition(node) {
            if (!node.name && operationCount > 1) {
                context.reportError(new GraphQLError('This anonymous operation must be the only defined operation.', { nodes: node }));
            }
        },
    };
}