.jq

# https://github.com/stedolan/jq/blob/master/src/builtin.jq
# https://github.com/stedolan/jq/blob/ca12bd9b5d15c0c4e5bd01d706ddbb3f4edefd36/src/builtin.jq
# Apply f to composite entities recursively, and to atoms
def walk(f):
  . as $in
  | if type == "object" then
      reduce keys_unsorted[] as $key
        ( {}; . + { ($key):  ($in[$key] | walk(f)) } ) | f
  elif type == "array" then map( walk(f) ) | f
  else f
  end;

def toDate1000: . / 1000 | todate;

def showDates: walk(if (type == "number" and . > 1000000000000) then tostring + " " + toDate1000 else . end);

#https://stackoverflow.com/questions/74195390/jq-library-overriding-existing-keys-of-an-json-object-with-another-object-keys#answer-74197668
def merge($source):
        . as $target
        | reduce ($source | keys | map(select(in($target))))[] as $key ($target;
            .[$key] = if (.[$key] | type) == "object"
                          then .[$key] | merge($source[$key])
                          else $source[$key]
                      end
        )
    ;