::v-deep usage as a combinator has been deprecated. Use :deep(<inner-selector>) instead

[Bigredorange]

in terminal, I got warning message , ::v-deep usage as a combinator has been deprecated. Use :deep() instead, I think ,I don't have to provide child pseudo element( ::v-deep (.child))
I just want use like this,
::v-deep {
.xxx
}
after complied
[v-data-xxxxxxx] .xxx

and NO WARNING Message