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Try to reduce repitition in CursorIterator

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This commit is contained in:
Danila Fedorin 2021-08-24 11:11:30 -07:00
parent a2ff02e6c0
commit 1707df71df
1 changed files with 1 additions and 3 deletions
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4
src/matrix/storage/idb/utils.ts
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@ -144,9 +144,7 @@ export function txnAsPromise(txn): Promise<void> {
* Thus, when a value is available (an `IDBCursorWithValue` is given), we require a function `(T) => ...`, and when it is not, we require
* a function `(undefined) => ...`.
*/
type CursorIterator<T, I extends IDBCursor> = I extends IDBCursorWithValue ?
(value: T, key: IDBValidKey, cursor: IDBCursorWithValue) => { done: boolean, jumpTo?: IDBValidKey } :
(value: undefined, key: IDBValidKey, cursor: IDBCursor) => { done: boolean, jumpTo?: IDBValidKey }
type CursorIterator<T, I extends IDBCursor> = (value: I extends IDBCursorWithValue ? T : undefined, key: IDBValidKey, cursor: I) => { done: boolean, jumpTo?: IDBValidKey }
export function iterateCursor<T, I extends IDBCursor = IDBCursorWithValue>(cursorRequest: IDBRequest<I | null>, processValue: CursorIterator<T, I>): Promise<boolean> {
// TODO: does cursor already have a value here??