Sets a maximum age (minimum one day) for script storage values, after which they are deleted
This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/562172/1732034/Temporary-Script-Storage.js
Storage set and accessed through an instance of this class will only live as long as the lifetime you set in the constructor, though it must be at least a day. The default is 30 days. After that time, it will expire and be deleted when sweepExpiredEntries() is called, which you can schedule with setInterval().
This library has no effect on script storage set directly through GM's setValue() the usual way. Such storage will behave normally.
Example usage:
const persistentStorage = new TTLStorage();
await persistentStorage.ready();
setInterval(() => persistentStorage.sweepExpiredEntries(), 1000 * 60 * 60 * 24);
persistentStorage.set("key1", "hello");
const msg = persistentStorage.get("key1");
Additionally, any script using this library must include the following metadata:
// @grant GM.getValue
// @grant GM.setValue
// @grant GM.deleteValue
// @grant GM.listValues
This is necessary because putting what each library needs in its own metadata is not enough. The top-level script must provide the necessary @requires and @grants for all of its dependencies.