in src/functions.ts [161:173]
await streamPipeline(
response.body,
fs.createWriteStream(xpiFilepath),
);
req.xpiFilepath = xpiFilepath;
// Add a listener that will run code after the response is sent.
res.on('finish', () => {
_unlinkFile(xpiFilepath).catch((error) => {
_console.error(`_unlinkFile(): ${error}`);
});
});