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// Licensed to the Software Freedom Conservancy (SFC) under one
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// or more contributor license agreements.  See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership.  The SFC licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License.  You may obtain a copy of the License at
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//
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//   http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied.  See the License for the
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// specific language governing permissions and limitations
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// under the License.
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'use strict'
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/**
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 * Determines whether a {@code value} should be treated as an object.
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 * @param {?} value The value to test.
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 * @returns {boolean} Whether the value is an object.
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 */
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function isObject(value) {
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  return Object.prototype.toString.call(value) === '[object Object]'
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}
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/**
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 * Determines whether a {@code value} should be treated as a promise.
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 * Any object whose "then" property is a function will be considered a promise.
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 *
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 * @param {?} value The value to test.
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 * @return {boolean} Whether the value is a promise.
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 */
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function isPromise(value) {
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  try {
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    // Use array notation so the Closure compiler does not obfuscate away our
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    // contract.
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    return (typeof value === 'object' || typeof value === 'function') && typeof value['then'] === 'function'
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    /*eslint no-unused-vars: "off"*/
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  } catch (ex) {
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    return false
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  }
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}
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module.exports = {
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  isObject,
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  isPromise,
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}
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