| import { GraphQLError } from "../error/GraphQLError.mjs"; |
| |
| /** |
| * Extracts the root type of the operation from the schema. |
| */ |
| export function getOperationRootType(schema, operation) { |
| if (operation.operation === 'query') { |
| var queryType = schema.getQueryType(); |
| |
| if (!queryType) { |
| throw new GraphQLError('Schema does not define the required query root type.', operation); |
| } |
| |
| return queryType; |
| } |
| |
| if (operation.operation === 'mutation') { |
| var mutationType = schema.getMutationType(); |
| |
| if (!mutationType) { |
| throw new GraphQLError('Schema is not configured for mutations.', operation); |
| } |
| |
| return mutationType; |
| } |
| |
| if (operation.operation === 'subscription') { |
| var subscriptionType = schema.getSubscriptionType(); |
| |
| if (!subscriptionType) { |
| throw new GraphQLError('Schema is not configured for subscriptions.', operation); |
| } |
| |
| return subscriptionType; |
| } |
| |
| throw new GraphQLError('Can only have query, mutation and subscription operations.', operation); |
| } |