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Error: Expected undefined to be a GraphQL schema. on version 16.0.1

See original GitHub issue

node: 16.13.0 graphql-js: 16.0.1 I tried to run this example from official documentation :

var { graphql, buildSchema } = require('graphql');

// Construct a schema, using GraphQL schema language
var schema = buildSchema(`
  type Query {
    hello: String
  }
`);

// The root provides a resolver function for each API endpoint
var root = {
	hello: () => {
		return 'Hello world!';
	},
};

// Run the GraphQL query '{ hello }' and print out the response
graphql(schema, '{ hello }', root).then((response) => {
	console.log(response);
});

and got this error:

/home/arunz/Downloads/graphql/node_modules/graphql/type/schema.js:35
    throw new Error(
          ^

Error: Expected undefined to be a GraphQL schema.
    at assertSchema (/home/arunz/Downloads/graphql/node_modules/graphql/type/schema.js:35:11)
    at validateSchema (/home/arunz/Downloads/graphql/node_modules/graphql/type/validate.js:34:28)
    at graphqlImpl (/home/arunz/Downloads/graphql/node_modules/graphql/graphql.js:52:64)
    at /home/arunz/Downloads/graphql/node_modules/graphql/graphql.js:21:43
    at new Promise (<anonymous>)
    at graphql (/home/arunz/Downloads/graphql/node_modules/graphql/graphql.js:21:10)
    at Object.<anonymous> (/home/arunz/Downloads/graphql/hello.js:18:1)
    at Module._compile (node:internal/modules/cjs/loader:1101:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1153:10)
    at Module.load (node:internal/modules/cjs/loader:981:32)

No error with graphql-js version 15.7.2