NodeJS server to respond with Raspberry Pi CPU temperature

rpi-temp-server.js

#!/usr/bin/env node

const http = require("http");
const childProcess = require("child_process");

const host = process.env.HOST || '0.0.0.0'
const port = process.env.PORT || '7373'

const requestListener = function (req, res) {
    try {
        const result = childProcess.execSync("vcgencmd measure_temp", { encoding: 'utf-8' })
        const stripped = result.trim().substring(5) // remove "temp="
        res.setHeader("Content-Type", "application/json; charset=utf-8");
        res.writeHead(200);
        res.end(JSON.stringify({
            temperature_formatted: stripped.replace("'", '°'),
            temperature: Number.parseFloat(stripped.slice(0, -2)),
        }));
    } catch (error) {
        res.setHeader("Content-Type", "application/json; charset=utf-8");
        res.writeHead(500);
        res.end(JSON.stringify({ error: error.message.trim() }))
    }
};

http.createServer(requestListener).listen(port, host, () => {
    console.log(`Server is running on http://${host}:${port}`);
});

services.yaml

# Homepage integration
# https://gethomepage.dev/widgets/services/customapi/
type: customapi
url: http://my.pi.ip:7373
mappings:
    - field: temperature_formatted
      label: CPU Temp