John Gill Commentary Joshua 10:30

"and Jehovah delivered it also, and the king thereof, into the hand of Israel; and he smote it with the edge of the sword, and all the souls that were therein; he left none remaining in it; and he did unto the king thereof as he had done unto the king of Jericho." — Joshua 10:30 (ASV)

And the Lord delivered it also, and the king thereof, into
the hand of Israel
At once, no opposition being made that we read of:

and he smote it with the edge of the sword, and all the souls that
[were] therein, he let none remain in it ;
that is, Israel smote it, or Joshua, and indeed both; and this was according to the orders given them to be observed with respect to all the cities and nations of Canaan; and that because of their abominable sins and wickedness, and to make way and room for the people of Israel, (Deuteronomy 7:1Deuteronomy 7:2) ;

but did unto the king thereof as he did unto the king of Jericho :
slew him with the inhabitants.