function isLength(value) {
  return typeof value == 'number' &&
    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
}
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