File kv.js

host/storage/src/main/kv.js:None–None

/* localStorage + sessionStorage, sync handlers; both APIs are blocking by spec so no Promise wrapping needed. */

/* JSON-array of keys (not CSV) so keys containing commas survive the round-trip. Python parses with `json.loads`. */
const keysOf = (store) => JSON.stringify(Array.from({ length: store.length }, (_, i) => store.key(i)));