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

Fork of GraphQL.js

import { memoize1 } from '../jsutils/memoize1.js';
export const getRootTypeMap = memoize1(function getRootTypeMap(schema) {
    const rootTypeMap = new Map();
    const queryType = schema.getQueryType();
    if (queryType) {
        rootTypeMap.set('query', queryType);
    }
    const mutationType = schema.getMutationType();
    if (mutationType) {
        rootTypeMap.set('mutation', mutationType);
    }
    const subscriptionType = schema.getSubscriptionType();
    if (subscriptionType) {
        rootTypeMap.set('subscription', subscriptionType);
    }
    return rootTypeMap;
});