According to Firebase documentation, Cloud Functions must be concluded with res.send(), res.end(), or res.redirect(). However, when I utilize res.sendFile() to send file content, the console logs display multiple invocations (around 4-5 invocations).
What is the correct method for utilizing res.sendFile() in Firebase Cloud Functions?
Adding a HTTP status code to the sendFile() function can indicate successful completion and prevent repeat invocation:
res.status(200).sendFile(...)
The concept of terminating HTTP functions is outlined in the documentation, with an example using only send():
const formattedDate = moment().format(format); console.log('Sending Formatted date:', formattedDate); res.status(200).send(formattedDate);
Most calls to send() or other methods like json() within the Cloud Functions for Firebase Sample Library utilize status() as well.
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