Yes, we should do a version check programmatically to ensure that the user has the most updated version. We have to implement a parallel upgrade to ensure the correct version loads in the client. We achieve this by calling onversionchange to ensure that the client is updated correctly. These update collisions happen rarely, but we should at least have some handling for them, at least onblocked handler, to prevent our script from dying silently.
Code Example :
let openRequest = indexedDB.open("store", 2);
openRequest.onupgradeneeded = ...;
openRequest.onerror = ...;
openRequest.onsuccess = function() {
let db = openRequest.result;
db.onversionchange = function() {
db.close();
console.log("Database is outdated, please reload the page.")
};
// ...the db is ready, use it...
};
openRequest.onblocked = function() {
// this event shouldn't trigger if we handle onversionchange correctly
// it means that there's another open connection to same database
// and it wasn't closed after db.onversionchange triggered for it
};?
