message: Add IDBDatabase to webworker.iterable
diff: @@ -50,6 +50,13 @@ interface Headers {
  values(): IterableIterator<string>;
  }
  +interface IDBDatabase {
  + /**
  + * Returns a new transaction with the given mode ("readonly" or "readwrite") and scope which can be a single object store name or an array of names.
  + */
  + transaction(storeNames: string | Iterable<string>, mode?: IDBTransactionMode): IDBTransaction;
  +}
  +
  interface IDBObjectStore {
  /**
  * Creates a new index in store with the given name, keyPath and options and returns a new IDBIndex. If the keyPath and options define constraints that cannot be satisfied with the data already in store the upgrade transaction will abort with a "ConstraintError" DOMException.
  