i am writing a program that send multiple request ti retrieve some data from an external api , it works fine , but when i try to add a function "appendFile" that save the data received in a json the server starts to behave strangely and restart every time ,and resend the same request again and again which wasn't thes case before i added the function , if you have any insights abozt this problem please help , thanks :
here is my code to send request and and save the data in a json
const streamActivity = (client) => (activityId) => {
return new Promise((resolve, reject) => {
client.streams.activity(
{
id: activityId,
types:
"time,heartrate,velocity_smooth,altitude,distance,latlng,cadence,watts,temp,moving,grade_smooth,average_speed",
resolution: "high",
},
function (err, payload,next) {
if (!err ) {
//save to json
appendToFile1('activity-streams.json', payload)
} else {
reject(err)
}
}
);
});
// setInterval(streamActivity,5000);
};
and this is the append file function :
function appendToFile1(file, payload) {
fs.appendFile(file, JSON.stringify({payload}), (err) => {
if (err) throw err
console.log('Done writing') // Success
})
}