| 1 | import { memoize1 } from './memoize.js';
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| 2 | export function getDefinedRootType(schema, operation) {
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| 3 | const rootTypeMap = getRootTypeMap(schema);
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| 4 | const rootType = rootTypeMap.get(operation);
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| 5 | if (rootType == null) {
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| 6 | throw new Error(`Root type for operation "${operation}" not defined by the given schema.`);
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| 7 | }
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| 8 | return rootType;
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| 9 | }
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| 10 | export const getRootTypeNames = memoize1(function getRootTypeNames(schema) {
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| 11 | const rootTypes = getRootTypes(schema);
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| 12 | return new Set([...rootTypes].map(type => type.name));
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| 13 | });
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| 14 | export const getRootTypes = memoize1(function getRootTypes(schema) {
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| 15 | const rootTypeMap = getRootTypeMap(schema);
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| 16 | return new Set(rootTypeMap.values());
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| 17 | });
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| 18 | export const getRootTypeMap = memoize1(function getRootTypeMap(schema) {
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| 19 | const rootTypeMap = new Map();
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| 20 | const queryType = schema.getQueryType();
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| 21 | if (queryType) {
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| 22 | rootTypeMap.set('query', queryType);
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| 23 | }
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| 24 | const mutationType = schema.getMutationType();
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| 25 | if (mutationType) {
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| 26 | rootTypeMap.set('mutation', mutationType);
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| 27 | }
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| 28 | const subscriptionType = schema.getSubscriptionType();
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| 29 | if (subscriptionType) {
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| 30 | rootTypeMap.set('subscription', subscriptionType);
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| 31 | }
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| 32 | return rootTypeMap;
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| 33 | });
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