Simple Aggregate Function

1import { type Writer } from "./core.js";
2
3/**
4 * `SimpleAggregateFunction(func, T)` is TRANSPARENT in RowBinary — the column
5 * holds a finished value of `T` — so encode the inner `T` directly. Identity
6 * combinator mirroring `readSimpleAggregateFunction`:
7 *
8 *   writeSimpleAggregateFunction(writeUInt64) === writeUInt64
9 */
10export const writeSimpleAggregateFunction = <T>(
11  writeValue: Writer<T>,
12): Writer<T> => writeValue;