Function accumulate

accumulate<I, O>(acc: O, fn: Accumulator<I, O>): TransformStream<I, O>
Every chunk is transformed in to an accumulator.
Type Parameters
- I
- O
Parameters
- acc: O
- fn: Accumulator<I, O>
Returns TransformStream<I, O>
See
reduce:function
Example
Accumulate all previous chunks with a counter.
```
--0-------------------------1-------------------------------

accumulate({ chunks: [], counter: 0 }, (acc, chunk) => ({
  chunks: [...acc.chunks, chunk],
  counter: acc.counter + 1
}))

----{chunks:[0],counter:1}------{chunks:[0,1],counter:2}----
```
- Defined in packages/stream/src/transformers/accumulate.ts:22