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Module

x/gamla/src/mapping.ts>groupByReduce

uriva/gamlajs
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variable groupByReduce
import { groupByReduce } from "https://deno.land/x/gamla@65.0.0/src/mapping.ts";

type

<T, S, K extends Primitive>(
key: (_: T) => K,
reducer: Reducer<T, S>,
initial: () => S,
) => (_: T[]) => Record<K, S>