iterama/node/reduce-async.js

Composable functional (async) iterable helpers

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.reduceAsync = void 0;

const reduceAsync = (reduceFn, initial) => iterable => ({
  async *[Symbol.asyncIterator]() {
    let state = await initial;
    let i = 0;

    for await (const value of iterable) {
      state = await reduceFn(state, value, i++);
    }

    yield state;
  }

});

exports.reduceAsync = reduceAsync;