text: /**
   * The MIT License (MIT)
   *
   * Copyright (c) 2014-2018 Mickael Jeanroy
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  import {pp} from '../../jasmine/pp.js';
  import {sizeOf} from '../../util/size-of.js';
  
  /**
   * Check that tested object is empty:
   * - If it is an `array` or an array-like, check that the length is equal to zero.
   * - If it is an object, check that it does not have any property.
   * - If it is a `map` or a `set`, check that the size is equal to zero.
   *
   * @message Expect [actual] (not) to be empty.
   * @example
   *   expect('').toBeEmpty();
   *   expect([]).toBeEmpty();
   *   expect({}).toBeEmpty();
   *   expect(new Map()).toBeEmpty();
   *   expect(new Set()).toBeEmpty();
   *
   * @param {Object} ctx Test context.
   * @return {Object} Test result.
   * @since 0.1.0
   */
  export function toBeEmpty({actual}) {
    const size = sizeOf(actual);
    return {
      pass: size === 0,
      message() {
        return `Expect ${pp(actual)} {{not}} to be empty`;
      },
    };
  }
  