export function getImplementingTypes(interfaceName, schema) { const allTypesMap = schema.getTypeMap(); const result = []; for (const graphqlTypeName in allTypesMap) { const graphqlType = allTypesMap[graphqlTypeName]; if ('getInterfaces' in graphqlType) { const allInterfaces = graphqlType.getInterfaces(); if (allInterfaces.find(int => int.name === interfaceName)) { result.push(graphqlType.name); } } } return result; }