How to convert a string with equal "=" sign to json in JavaScript

The Following String is returned from Kafka to Lambda Connector.

'{device_id=D_2021_A07, key=tele_metrics, sensor_1=62, sensor_2=23}'

I want to convert this to a valid JSON like this

{
    "device_id": "D_2021_A07",   //String
    "key": "tele_metrics",       //String
    "sensor_1": 62,              //Integer
    "sensor_2": 23               //Integer
}

How can I do that in Javascript.

You can strip the first and last character, split at the commas, split at each =, convert the values to numbers if possible, and then combine the pairs to an object:

const dataA = '{device_id=D_2021_A07, key=tele_metrics, sensor_1=62, sensor_2=23}';
const dataB = Object.fromEntries(
  dataA
    .substring(1, dataA.length - 1)
    .split(', ')
    .map(pair => pair.split('='))
    .map(([key, value]) => [key, isNaN(value) ? value : +value])
);
console.log(dataB);
console.log(JSON.stringify(dataB));