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Maven plugin for generating graphql clients

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/**
 * Copyright (c) 2015-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow strict
 */

/**
 * Returns true if the value acts like a Promise, i.e. has a "then" function,
 * otherwise returns false.
 */
declare function isPromise(value: mixed): boolean %checks(value instanceof
  Promise);

// eslint-disable-next-line no-redeclare
export default function isPromise(value) {
  return Boolean(value && typeof value.then === 'function');
}