appwrite/app/sdks/client-web/docs/examples/storage/update-file.md

let sdk = new Appwrite();

sdk .setProject('5df5acd0d48c2') // Your project ID ;

let promise = sdk.storage.updateFile('[FILE_ID]', [], []);

promise.then(function (response) { console.log(response); // Success }, function (error) { console.log(error); // Failure });