Checks if `value` is classified as a `String` primitive or object.

@static
@memberOf _
@category Lang
@param {*} value The value to check.
@returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
@example

_.isString('abc');
// => true

_.isString(1);
// => false
function isString(value) {
	  return typeof value == 'string' ||
	    (!isArray$3(value) && isObjectLike$4(value) && objectToString$4.call(value) == stringTag);
	}