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| 'use strict';
| module.exports = (iterable, reducer, initVal) => new Promise((resolve, reject) => {
| const iterator = iterable[Symbol.iterator]();
| let i = 0;
|
| const next = total => {
| const el = iterator.next();
|
| if (el.done) {
| resolve(total);
| return;
| }
|
| Promise.all([total, el.value])
| .then(value => {
| next(reducer(value[0], value[1], i++));
| })
| .catch(reject);
| };
|
| next(initVal);
| });
|
|
