HORIZON PROJECT

/** Used as references for various `Number` constants. */

var MAX_SAFE_INTEGER = 9007199254740991;

/**

 * Checks if `value` is a valid array-like length.

 *

 * **Note:** This method is loosely based on

 * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).

 *

 * @static

 * @memberOf _

 * @since 4.0.0

 * @category Lang

 * @param {*} value The value to check.

 * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.

 * @example

 *

 * _.isLength(3);

 * // => true

 *

 * _.isLength(Number.MIN_VALUE);

 * // => false

 *

 * _.isLength(Infinity);

 * // => false

 *

 * _.isLength('3');

 * // => false

 */

function isLength(value) {

  return typeof value == 'number' &&

    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;

}

module.exports = isLength;