nl_tokens: Normalizes the provided array of object store fetch descriptors to process before upgrading the database schema .
pl_tokens: function normalizeFetchBeforeObjectStores ( objectStores ) { return objectStores . map ( ( objectStore ) => { if ( typeof objectStore === "string" ) { return { objectStore , preprocessor : record => <mask> } } else if ( ! objectStore . preprocessor ) { return { objectStore : objectStore . objectStore , preprocessor : record => record } } else { return objectStore } } ) }