TYPESCRIPT

python check all elements in list are in another list

check = all ( item in first_list for item in second_list )
# check = True - All elements from first_list are in second_list
# check = False - Not all elements from first_list are not in second_list

python all elements in list in another list

set(['a', 'b']).issubset(['a', 'b', 'c'])