1  var isInteger = require('./isInteger');
 2  
 3  /** Used as references for various `Number` constants. */
 4  var MAX_SAFE_INTEGER = 9007199254740991;
 5  
 6  /**
 7   * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
 8   * double precision number which isn't the result of a rounded unsafe integer.
 9   *
10   * **Note:** This method is based on
11   * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
12   *
13   * @static
14   * @memberOf _
15   * @since 4.0.0
16   * @category Lang
17   * @param {*} value The value to check.
18   * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
19   * @example
20   *
21   * _.isSafeInteger(3);
22   * // => true
23   *
24   * _.isSafeInteger(Number.MIN_VALUE);
25   * // => false
26   *
27   * _.isSafeInteger(Infinity);
28   * // => false
29   *
30   * _.isSafeInteger('3');
31   * // => false
32   */
33  function isSafeInteger(value) {
34    return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;
35  }
36  
37  module.exports = isSafeInteger;