1  /**
 2   * Checks `value` to determine whether a default value should be returned in
 3   * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
 4   * or `undefined`.
 5   *
 6   * @static
 7   * @memberOf _
 8   * @since 4.14.0
 9   * @category Util
10   * @param {*} value The value to check.
11   * @param {*} defaultValue The default value.
12   * @returns {*} Returns the resolved value.
13   * @example
14   *
15   * _.defaultTo(1, 10);
16   * // => 1
17   *
18   * _.defaultTo(undefined, 10);
19   * // => 10
20   */
21  function defaultTo(value, defaultValue) {
22    return (value == null || value !== value) ? defaultValue : value;
23  }
24  
25  module.exports = defaultTo;