The value to check. 要检查的值
True if the value is empty, false otherwise. 如果值为空则返回 true,否则返回 false
For strings, arrays, buffers, and typed arrays: "empty" means a length of 0.
For Map and Set: "empty" means a size of 0.
Nil values (null / undefined) are considered empty.
For plain objects: delegates to isEmptyObject, which uses for...in and therefore skips Symbol-keyed properties.
对于字符串、数组、缓冲区和类型化数组:"空"表示长度为 0。
对于 Map 和 Set:"空"表示大小为 0。
空值(null / undefined)被视为空。
对于普通对象:委托给 isEmptyObject,该方法使用 for...in,因此会跳过 Symbol 键属性。
Checks if a value is empty.
检查值是否为空。