Discussion on: Lazy Evaluation in JavaScript with Generators, Map, Filter, and Reduce

[Nested Software]

Thanks for your comment! While this code is lazy, it's still completely synchronous. So once take is called, it has to run to completion - calling next only processes one item, but I think you meant to say take. I wonder if you mean that this code could be implemented asynchronously. I did implement a simple asynchronous reduce for another article:

const asyncReduce = async function* (iterable, reducer, accumulator) {
    for await (const item of iterable) {
        const reductionResult = reducer(item, accumulator)

        accumulator = reductionResult

        yield reductionResult
    }
}