Return complete cases of sf object in R

What is the equivalent of df <- df[complete.cases(df), ] for sf objects?

I know sf objects behave mostly like dataframes with a "sticky" geometry column, but running the above code returns the following error:

df <- df[complete.cases(df), ]

Error in complete.cases(df) : invalid 'type' (list) of argument

This is likely due to sf objects storing their geometry variables as lists. Your input is appreciated!

You can use sf::st_is_empty() to check for empty geometries

library(sf)

pt1 <- sf::st_sfc(sf::st_point())
pt2 <- sf::st_sfc(sf::st_point(c(0,0)))

sf <- sf::st_sf(geometry = c(pt1, pt2))

sf[!sf::st_is_empty(sf), ]

# imple feature collection with 1 feature and 0 fields
# geometry type:  POINT
# dimension:      XY
# bbox:           xmin: 0 ymin: 0 xmax: 0 ymax: 0
# epsg (SRID):    NA
# proj4string:    NA
# geometry
# 1 POINT (0 0)