quick someliner to truncate json with jq

gistfile1.txt

jq 'map(
  if type == "array" then
    "[" + (.[0:5] | map(tostring) | join(", ")) + (if length > 5 then ", ..." else "" end) + "] (array, len=" + (length|tostring) + ")"
  elif type == "object" then
    "{ " + (to_entries[0:5] | map("\(.key): \(.value|tostring)") | join(", ")) + (if (to_entries | length) > 5 then ", ..." else "" end) + " } (object, keys=" + (keys|length|tostring) + ")"
  else
    (. | tostring) + " (" + (type) + ")"
  end
)' file.json

better one:

jq 'to_entries | map(
  {
    key,
    value: (
      if (.value | type) == "array" then
        "[" + ((.value[0:5]) | map(tostring) | join(", ")) +
        (if (.value | length) > 5 then ", ..." else "" end) +
        "] (array, len=" + ((.value | length)|tostring) + ")"
      elif (.value | type) == "object" then
        "{ " + ((.value | to_entries)[0:5] | map("\(.key): \(.value|tostring)") | join(", ")) +
        (if (.value | to_entries | length) > 5 then ", ..." else "" end) +
        " } (object, keys=" + ((.value | keys | length)|tostring) + ")"
      else
        (.value | tostring) + " (" + (.value | type) + ")"
      end
    )
  }
) | from_entries' file.json