Memory leak

[Arkdevnoder]

A memory leak was detected at > 2 RPS.
Here is the code for testing (I apologize for the design of the code, I added an excerpt for issuing an HTML dump):

const fs = require("fs"); 
const rp = require('request-promise'); 

async function vk_post(data){ 
var options = { 
method: 'POST', 
uri: "https://api.vk.com/method/messages.send?v=5.68", 
form: data, 
headers: { 
'User-Agent': 'E-Bot-handler' 
}, 
json: true 
}; 
try { 
const data = await rp(options); 
return data; 
} catch(e) { 
return e; 
} 
} 


let data = { 
message: "Hello", 
peer_id: "281618690", 
access_token: "1rtp142231432twg2" 
} 


setInterval(async function(){ 
await vk_post(data);
}); 
let x = 0; 


setInterval(function(){ 
console.log(process.memoryUsage()); 
x = x+10; 
load = process.memoryUsage().rss/100000; 
loadX = process.memoryUsage().heapTotal/100000; 
loadY = process.memoryUsage().heapUsed/100000; 
loadZ = process.memoryUsage().external/10000; 
fs.appendFileSync('/var/www/html/load2.html', '<div style="bottom: '+load+'px; left: '+x+'px; position: absolute; height: 10px; width: 10px; background: red;"></div>'+ 
'<div style="bottom: '+loadX+'px; left: '+x+'px; position: absolute; height: 10px; width: 10px; background: blue;"></div>'+ 
'<div style="bottom: '+loadY+'px; left: '+x+'px; position: absolute; height: 10px; width: 10px; background: green;"></div>'+ 
'<div style="bottom: '+loadZ+'px; left: '+x+'px; position: absolute; height: 10px; width: 10px; background: pink;"></div>' 
); 
}, 300);