Bot did not work

[lqtacy]

node bot.js -- command did not work

client.login(process.env.BOT_TOKEN) ^

ReferenceError: client is not defined at Object. (/root/tarayıcı/bot.js:415:1) at Module._compile (module.js:652:30) at Object.Module._extensions..js (module.js:663:10) at Module.load (module.js:565:32) at tryModuleLoad (module.js:505:12) at Function.Module._load (module.js:497:3) at Function.Module.runMain (module.js:693:10) at startup (bootstrap_node.js:191:16) at bootstrap_node.js:612:3

[spuqe]

Installing Discord.io or and Discord.js could help?