"integer" JSON value become float in lua5.3

[dong-king]

environment: lua5.3 and lua-cjson 2.1.0.10-1

json file: cfg.json

{
    "server_ip": "192.168.1.100",
    "server_port": 10000,
}

lua code:

local cjson = require("cjson.safe")
local cfg_file_path = './cfg.json'

local cfg_fd = io.open(cfg_file_path, 'r')
local cfg_contents = cfg_fd:read("*all")
local cfg_obj = cjson.decode(cfg_contents)

for key, value in pairs(cfg_obj) do
    print(value)
end

the printout result：
192.168.1.100
10000.0

[LitschiW]

We have a similar problem using cjson to process an opentelemetry request after decoding and encodind.

Input: "timeUnixNano":1686041011364000000
Output: "timeUnixNano":1.686041011364e+18