`withDefaults`。 > [https://cn.vuejs.org/api/sfc-script-setup.html#default-> props-...](https://link.segmentfault.com/?enc=u1RKjrWBgNuGFIoGMbzhCw%3D%3D.4ASB439tx%2F9d6MhcyscWPcUpDkEtRTaH%2BkW2NUlgMiQqFLY%2FVFntvddVNO4SN4%2BEdhwQW7Tbh4%2B9BEL88ZfCU67zYJn%2BBBG61erOdTvAqCGydtI2xcuQIgli0tDgflLX)